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    • SOG Knives & Tools

    SOG Knives: Vietnam Special Forces Heritage, Patented Assisted Technology & the World's Most Innovative Multitool Lineup

    SOG was founded in 1986 by Spencer Frazer — named in honor of the Studies and Observations Group, the elite Vietnam-era special operations unit whose classified MACV-SOG knife Frazer had encountered and been inspired by. From that single piece of Special Forces history SOG has built one of the most technically innovative knife and tool brands in the industry — developing patented mechanisms across three product categories that no competitor has matched. The AT (Assisted Technology) opening system delivers near-automatic deployment speed in a legally-carried assisted folder. The Compound Leverage system in the PowerLock and PowerAccess multitool line multiplies applied hand force by over 150 percent — making SOG multitools measurably more powerful than any standard plier design. The Dynamic Locking System on the Pentagon OTF delivers a positive, reliable out-the-front deployment mechanism engineered specifically for tactical and professional carry. Across Standard, Select, and Premium steel tiers SOG delivers proven tactical performance at every price point in the catalog. Knifeworks is a proud authorized SOG dealer — every knife and tool we sell is 100% genuine and fully warranted.

    SOG Assisted Opening Knives SOG Automatic Knives
    SOG Axe's & Tomahawks SOG Fixed Blade Knives
    SOG Folding Knives SOG Multi Tools 
    Compare Selected
    Authorized SOG Dealer Every knife and tool is 100% genuine — sourced direct from SOG. No gray market, no counterfeits.
    ⚡
    Patented AT Assisted Opening SOG's Assisted Technology delivers near-automatic deployment speed in a legally carried manual folder.
    Compound Leverage Multitools SOG's patented Compound Leverage system multiplies plier force by over 150% — stronger than any standard multitool design.
    Fast Shipping Most orders ship same or next business day from Columbia, Louisiana.

    The Complete SOG Buyer's Guide (2026)

    Everything you need to choose the right SOG — from the Special Forces heritage story and three-tier steel system to the AT assisted opening mechanism, Compound Leverage multitools, Dynamic Locking OTF, fixed blades, and use-case recommendations. Click any topic to expand.

    The SOG Story: From Vietnam Special Forces to Modern Tactical Innovation ﹢

    SOG was founded in 1986 by Spencer Frazer — but the brand's origin story begins decades earlier in the classified operations of the Vietnam War. MACV-SOG — the Military Assistance Command Vietnam, Studies and Observations Group — was one of the most elite and most secretive special operations units in American military history. Their operators carried a distinctive bowie-style fighting knife that became one of the most sought-after pieces of Vietnam War militaria. Frazer encountered one of these knives, recognized its significance, and founded SOG specifically to reproduce and honor it — naming the company after the unit that carried it.

    From that single piece of Special Forces history SOG has built a brand defined by three principles that run through every product in the catalog:

    • Performance proven in the field: SOG's military and law enforcement heritage shapes every design decision — knives and tools built to perform under stress, not just look tactical on a shelf
    • Patented mechanical innovation: The AT assisted opening system, the Compound Leverage multitool mechanism, and the Dynamic Locking System OTF are all genuine SOG-developed innovations that no competitor has replicated
    • Accessibility across the catalog: SOG's three-tier steel and product system — Standard, Select, and Premium — ensures that genuine SOG performance is accessible at every budget level from sub-$30 to premium CPM-class knives
    ️ MACV-SOG — The Heritage Behind the Brand The original MACV-SOG knife that inspired Spencer Frazer was a classified piece of military equipment — carried by operators on missions so secret that their existence was officially denied for decades after the war. When Frazer reproduced it in 1986 he was not just making a knife. He was preserving a piece of American special operations history. That commitment to honoring the knife's military origin is woven into every SOG product that has followed — a brand that takes the word "tactical" seriously because it was founded by someone who understood what tactical actually means.
    SOG's Three-Tier Steel System: Standard, Select & Premium Explained ﹢

    SOG organizes their catalog into three steel and product tiers — Standard, Select, and Premium — making it straightforward to match budget and performance requirements to the right SOG product. Understanding what each tier delivers helps buyers choose confidently without over-spending or under-buying for their intended use.

    Tier Steels Used Performance Level Price Range Best For
    Standard 3Cr13, 5Cr13MoV, 5Cr15MoV Functional everyday carry — adequate edge retention, easy sharpening, excellent corrosion resistance Sub-$30 to $60 Budget-conscious buyers, high-volume working tools, gift tier, introductory SOG
    Select AUS-8, D2, 7Cr17MoV, 8Cr13MoV, 9Cr18MoV Mid-range performance — improved edge retention and toughness over Standard $40–$100 Serious everyday carry, tactical users, outdoor work, buyers who want more from their SOG
    Premium CPM-S35VN, CTS-XHP, VG-10 Premium performance — edge retention and steel quality competitive with any production brand $80–$180+ Collectors, professionals, buyers who want the best SOG has to offer
    How to Read the Tier System The SOG tier system is one of the clearest buyer navigation tools of any production knife brand. If you are buying a working knife that will see hard daily use and occasional abuse — Standard tier gives you a knife you can replace without anxiety if it is lost or damaged. If you want a serious daily carry tool with meaningful edge retention — Select tier AUS-8 or D2 delivers genuine performance. If you want the best SOG makes at a premium steel specification that competes with any production brand — Premium tier CPM-S35VN and CTS-XHP is the answer.
    SOG Assisted Technology (AT): Patented Fast Deployment Explained ﹢

    SOG's Assisted Technology — marketed as AT — is their patented assisted opening system that delivers near-automatic deployment speed in a legally-carried manual folding knife. Like all assisted opening systems AT requires the user to manually initiate the opening via thumb stud or flipper tab before the spring mechanism completes the deployment — keeping it in the legal category of a standard manual folder in virtually all U.S. jurisdictions.

    Feature SOG AT Assisted Standard Manual Flipper Automatic Knife
    Deployment User initiates — AT spring completes User completes entirely manually Button fires — no manual input
    Speed ★★★★★ — near-automatic ★★★☆☆ — user-dependent ★★★★★ — fully automatic
    Legal Status Legal in virtually all U.S. states Legal everywhere Restricted in many states
    Initiation Thumb stud or flipper tab Thumb stud or flipper tab Button or switch only
    Lock Type Liner Lock — standard on most AT models Varies Button Lock or other dedicated auto lock
    ⚡ AT vs Standard Assisted — What Makes SOG's System Distinctive SOG's AT system uses a coil spring behind the blade tang that engages when the user pushes the blade past approximately 30–35 degrees of arc — similar in concept to Kershaw's SpeedSafe torsion bar but using a coil spring design that SOG developed and patented independently. The deployment feel is crisp and positive — the blade snaps open with a satisfying authority that makes SOG AT folders among the most satisfying assisted openers to deploy in the production knife market. For buyers who want fast deployment in a legal carry knife SOG AT is one of the three most proven assisted opening systems available alongside Kershaw SpeedSafe and CRKT OutBurst.
    Compound Leverage: Why SOG Multitools Are Measurably Stronger ﹢

    SOG's Compound Leverage system is the most significant mechanical innovation in the multitool industry since Tim Leatherman invented the plier-based folding multitool in 1983. It is a patented gear-driven mechanism built into the plier head of select SOG multitools that multiplies the force applied by the user's hand by over 150 percent — delivering measurably greater gripping and cutting force than any standard fixed-pivot plier design at the same hand effort.

    Feature SOG Compound Leverage Standard Plier Design
    Force Multiplication Over 150% of applied hand force Standard mechanical advantage only
    Mechanism Patented gear-driven compound pivot in plier head Fixed single pivot — no force multiplication
    Wire Cutting Cuts harder wire gauges with less hand effort Limited by hand strength at standard pivot
    Gripping Significantly stronger grip on fasteners and objects Grip limited to hand strength alone
    Models Available PowerAccess Assist MT, PowerPint, PowerLock N/A — standard design only
    Trade-Off Slightly more complex mechanism — more moving parts than standard pliers Simple and durable but less powerful

    The Three Compound Leverage Models:

    • PowerLock: SOG's flagship full-size Compound Leverage multitool — maximum tool count with the full gear-driven plier advantage. The definitive SOG multitool for heavy trades and demanding field use.
    • PowerAccess Assist MT: Compound Leverage in a more accessible format — assisted opening blades alongside the gear-driven plier system for buyers who want AT-speed blade deployment in their multitool.
    • PowerPint: Compact Compound Leverage — the gear-driven plier advantage in a pocket-friendly package. The right choice for buyers who want SOG multitool power in a more portable format.
    Why Compound Leverage Matters in Real Use The practical advantage of Compound Leverage is most apparent in two specific tasks — cutting hard wire and gripping stripped or stubborn fasteners. A SOG PowerLock can cut wire gauges and grip fasteners that standard multitool pliers simply cannot move with reasonable hand pressure. For tradespeople, military personnel, first responders, and anyone whose multitool use involves demanding mechanical work — Compound Leverage is a genuine functional advantage that standard plier designs cannot match regardless of build quality.
    Dynamic Locking System: SOG's Pentagon OTF Technology ﹢

    The Dynamic Locking System is SOG's patented out-the-front automatic knife mechanism found on the Pentagon OTF series. Unlike standard double-action OTF mechanisms that use a simple coil spring and slider, the Dynamic Locking System incorporates an additional positive lock engagement that secures the blade in the open position with greater reliability than conventional OTF designs.

    Feature SOG Dynamic Locking System Standard Double-Action OTF
    Deployment Slider fires blade forward — Dynamic Lock engages at full extension Slider fires blade forward — spring tension holds open
    Open Lock Positive Dynamic Lock engagement — additional security at full extension Spring tension only — less positive lockup
    Retraction Slider releases Dynamic Lock and retracts blade Slider retracts blade directly
    Action Type Double-action — fires and retracts with slider Double-action — fires and retracts with slider
    Found On Pentagon OTF series exclusively Most standard production OTF knives
    ⚠️ OTF Legal Reminder Out-the-front automatic knives are subject to state and local legal restrictions across the United States. Laws governing OTF carry vary significantly by jurisdiction — always verify your local and state laws before purchasing or carrying an OTF knife. As an authorized SOG dealer, Knifeworks sells the Pentagon OTF to buyers in jurisdictions where OTF ownership is legal. Contact our team with any questions about OTF carry legality in your area.
    SOG Fixed Blades: Tactical, Survival & Field Carry ﹢

    SOG's fixed blade lineup reflects the brand's military and tactical heritage — knives designed for professionals who need reliable performance in demanding field and operational environments. The lineup spans from compact every day fixed blade carry tools to full-size tactical and survival knives built for serious deployment.

    Category Steel Tier Key Features Best For
    Tactical Fixed Blades Select to Premium — AUS-8, D2, VG-10 Full tang, Kydex sheath, tactical blade geometry Military, law enforcement, defensive carry, hard field use
    Survival Fixed Blades Select — AUS-8, D2 Full tang, survival-oriented blade length, grip-forward handle Wilderness survival, camping, outdoor emergency use
    Hunting Fixed Blades Select to Premium — AUS-8, VG-10 Drop point profile, field-friendly blade length, leather or Kydex sheath Game processing, hunting carry, field dressing
    Compact EDC Fixed Blades Standard to Select Sub-4" blade, lightweight construction, versatile sheath options Daily outdoor carry, hiking, backup fixed blade
    Specialty & Large Format Standard to Select Machete-class blades, specialty geometry Heavy cutting tasks, brush clearing, camp utility
    ️ The SEAL Pup — SOG's Most Iconic Fixed Blade The SOG SEAL Pup is one of the most widely carried production tactical fixed blades in military and law enforcement history — a 4.85" AUS-8 blade with a partially serrated edge, Kraton handle, and hard nylon sheath that has been carried by service members and operators across multiple generations of military service. Its longevity in continuous production — like the Kershaw Blur and the Buck 110 — is the most compelling proof of its field performance. A knife that stays in production for decades because people keep choosing it is a knife that genuinely works.
    Choosing Your SOG: Quick Reference by Use Case & Steel Tier ﹢

    Not sure which SOG is right for your carry style, intended use, or budget? Match your needs to the right product category and steel tier from our current SOG catalog.

    Use Case Product Type Steel Tier Our Recommendation
    Budget EDC Folder Folding Knife Standard — 5Cr15MoV SOG Standard tier AT assisted folder
    Serious Tactical EDC Folding Knife Select — AUS-8 or D2 SOG Select tier AT assisted folder
    Premium EDC — Best Steel Folding Knife Premium — CTS-XHP or CPM-S35VN SOG Premium tier folder
    Heavy Trades Multitool Multitool Compound Leverage SOG PowerLock
    EDC Multitool with Fast Blade Multitool Compound Leverage + AT SOG PowerAccess Assist MT
    Compact Multitool Multitool Compound Leverage SOG PowerPint
    OTF Tactical Carry OTF Knife Dynamic Locking System SOG Pentagon OTF
    Tactical Fixed Blade Fixed Blade Select — AUS-8 SOG SEAL Pup or SEAL Team Elite
    Survival Fixed Blade Fixed Blade Select — AUS-8 or D2 SOG Survival fixed blade series

    SOG Knives: Frequently Asked Questions

    Expert answers from the team at Knifeworks — your authorized SOG dealer for the full lineup including AT assisted folders, fixed blades, Compound Leverage multitools, and the Pentagon OTF.

    What does SOG stand for and where does the name come from? ﹢

    SOG stands for Studies and Observations Group — the name of MACV-SOG, the classified Vietnam War special operations unit whose operators carried a distinctive bowie-style fighting knife that inspired founder Spencer Frazer to start the company in 1986. MACV-SOG was one of the most elite and most secretive units in American military history — their operations were classified for decades after the war ended. Frazer encountered one of the original MACV-SOG knives, recognized its historical and tactical significance, and founded SOG specifically to reproduce and honor it. The name has been carried forward on every SOG product since as a tribute to the special operations heritage at the brand's core.

    What is SOG's Assisted Technology (AT) opening system? ﹢

    SOG's Assisted Technology — AT — is a patented coil spring assisted opening system that delivers near-automatic deployment speed in a legally-carried manual folding knife. When the user pushes the blade past approximately 30–35 degrees of arc via thumb stud or flipper tab the AT coil spring engages and fires the blade to the fully open and locked position in a fraction of a second. Because the user must manually initiate the opening the AT system is classified as a standard assisted manual folder — legal to carry in virtually all U.S. states where standard folding knives are permitted.

    SOG's AT system is one of the three most proven assisted opening designs in the production knife market alongside Kershaw's SpeedSafe torsion bar and CRKT's OutBurst — each independently developed and each delivering near-automatic speed through different spring mechanisms.

    What is SOG's Compound Leverage system? ﹢

    SOG's Compound Leverage system is a patented gear-driven mechanism built into the plier head of the PowerLock, PowerAccess Assist MT, and PowerPint multitools that multiplies the force applied by the user's hand by over 150 percent. Standard multitool pliers use a fixed single pivot — the only force multiplication is the basic lever ratio of the handle. SOG's gear-driven compound pivot adds a second mechanical advantage stage in the plier head itself, delivering measurably greater gripping and cutting force at the same hand effort.

    The practical difference is most apparent when cutting hard wire, gripping stripped fasteners, or working with materials that standard multitool pliers struggle with. A SOG PowerLock with Compound Leverage can cut wire gauges and grip objects that standard multitool pliers simply cannot handle with reasonable hand pressure. It is the most significant mechanical innovation in multitool design since the plier-based folding multitool was invented in 1983.

    What is the difference between the SOG PowerLock, PowerAccess, and PowerPint? ﹢

    All three use SOG's patented Compound Leverage system — the difference is size, tool count, and additional features:

    • PowerLock: SOG's flagship full-size Compound Leverage multitool — maximum tool count with the full gear-driven plier advantage. The right choice for tradespeople, field professionals, and buyers who want the most capable SOG multitool available. Heavier carry but maximum utility.
    • PowerAccess Assist MT: Compound Leverage combined with SOG's AT assisted opening on the knife blade — the blade deploys with near-automatic speed alongside the gear-driven plier advantage. The right choice for buyers who want fast blade access alongside maximum plier power in a single tool.
    • PowerPint: Compact Compound Leverage in a smaller, lighter package. Fewer tools than the PowerLock but the same fundamental gear-driven plier advantage in a more pocketable format. The right choice for buyers who want SOG multitool power without the full-size PowerLock's weight and bulk.
    What is the SOG Pentagon OTF and how does the Dynamic Locking System work? ﹢

    The SOG Pentagon OTF is SOG's out-the-front automatic knife featuring the patented Dynamic Locking System — a mechanism that provides additional positive lock engagement when the blade reaches full extension, going beyond the spring tension that standard OTF designs rely on for open blade security.

    In standard double-action OTF knives the blade is held in the open position by spring tension alone. The Dynamic Locking System adds a positive lock engagement at full extension — the blade is mechanically secured open rather than merely spring-held open. To retract the blade the user slides the actuator which releases the Dynamic Lock and allows the blade to retract. The result is a more confident, more positive open blade feel compared to standard OTF designs.

    ⚠️ OTF Legal Notice Out-the-front automatic knives are subject to state and local legal restrictions. Laws vary significantly by jurisdiction — always verify your local and state laws before purchasing or carrying an OTF knife. Contact our team with any questions about OTF legality in your area.
    What is the difference between SOG Standard, Select, and Premium steel tiers? ﹢

    SOG organizes their catalog into three steel tiers that make it easy to match budget and performance requirements:

    • Standard (3Cr13, 5Cr13MoV, 5Cr15MoV): Functional everyday carry at budget-accessible price points. These steels offer good corrosion resistance and very easy sharpening. Adequate for general use where premium edge retention is not a priority. Best for buyers on a budget, high-volume working tools, or an entry-level introduction to the SOG catalog.
    • Select (AUS-8, D2, 7Cr17MoV, 8Cr13MoV, 9Cr18MoV): Meaningful step up in edge retention and toughness. AUS-8 is a proven Japanese stainless steel that delivers genuine performance for daily carry. D2 offers exceptional edge retention at the cost of some corrosion resistance. This tier covers serious everyday carry and tactical use at accessible prices.
    • Premium (CPM-S35VN, CTS-XHP, VG-10): Premium powder metallurgy and high-performance stainless steels that compete with any production knife brand. The best SOG has to offer — for collectors, professionals, and buyers who want maximum performance from their SOG knife.
    Does SOG offer a warranty? ﹢

    Yes — SOG backs every knife and tool with a limited lifetime warranty against defects in materials and workmanship for the original owner. The warranty covers manufacturing defects — it does not cover damage from misuse, disassembly, or normal wear.

    As an authorized SOG dealer, Knifeworks supports the full SOG warranty program on every purchase. Contact our team directly for warranty assistance — we coordinate with SOG on your behalf for the fastest possible resolution. SOG products purchased from unauthorized gray market sources may not be eligible for full warranty service — another important reason to buy from an authorized dealer like Knifeworks.

    What SOG products does Knifeworks carry? ﹢

    Knifeworks carries the full SOG lineup as an authorized dealer — all sourced directly from SOG and backed by the full SOG warranty across all three product categories:

    Folding Knives: Complete AT assisted opening lineup across Standard, Select, and Premium steel tiers — including the Terminus, Aegis AT, Trident AT, Zoom, and the full tactical folder catalog.

    Fixed Blades: Complete SOG fixed blade lineup including the SEAL Pup, SEAL Team Elite, and the full tactical, survival, and hunting fixed blade catalog.

    Multitools: Complete SOG multitool lineup including the PowerLock, PowerAccess Assist MT, PowerPint, and all Compound Leverage models.

    Not sure which SOG is right for your carry style, use case, or budget? Contact our team — we carry SOG every day and we are here to help you find the right one.

    Shop SOG with Confidence at Knifeworks Every SOG knife and tool in our catalog is sourced directly from authorized SOG channels — guaranteed genuine, backed by the full SOG warranty, and representing 40 years of Special Forces-inspired tactical innovation. AT assisted folders, Compound Leverage multitools, Dynamic Locking OTF, and the complete SOG fixed blade and tactical catalog is here. Fast shipping. Expert support. Real knife people who understand exactly what SOG's prove-it heritage delivers.