Hand Stops

Hand Stop M-LOK

An M-LOK hand stop is a compact firearm accessory that mounts into Modular Lock (M-LOK) slots on a handguard to provide a physical index point for the support hand, preventing the hand from sliding forward toward the muzzle during firing and improving weapon control during transitions and barricade shooting. M-LOK hand stops deliver 3 primary benefits: consistent hand placement for repeatable accuracy, muzzle control during rapid fire sequences, and a barricade rest surface for stabilized shooting from cover. M-LOK hand stops serve as index points on AR-15 rifles, pistol-caliber carbines, and shotguns with M-LOK-compatible forends, and M-LOK hand stops are used in competition shooting, home defense, law enforcement patrol rifles, and recreational range shooting. An M-LOK hand stop consists of 3 components: the hand stop body (polymer, aluminum, or G10 composite), a T-nut that inserts into the M-LOK slot from inside the handguard, and a mounting screw (Torx T20 or 3/32-inch hex) that draws the T-nut tight against the handguard wall. This guide covers M-LOK hand stop types and styles, top brands and models with specifications, installation and placement, materials and color options, and the comparison between hand stops and vertical foregrips.

Types of M-LOK Hand Stops

There are 4 types of M-LOK hand stops, each designed for a different grip style and shooting application:

• Hand stops: compact blocks or fins that sit below the handguard and provide a rear index point for the support hand thumb-over-bore grip, occupying 1 to 2 M-LOK slots and weighing 0.3 ounces (8.5 grams or g) to 1.5 ounces (42.5 g)
• Finger stops: low-profile ridges or tabs that extend less than 0.5 inches (12.7 millimeters or mm) below the handguard and provide a subtle index point without adding bulk, suited for slim handguard builds and concealed rifle bags
• Barricade stops: flat-faced or textured blocks designed to hook against barricades, window frames, and vehicle hoods for stabilized positional shooting, with a wider contact surface than standard hand stops
• Hand stop kits: multi-piece sets (such as the Magpul M-LOK Hand Stop Kit) that include a hand stop, finger stop, and rail covers in one package for customizable grip zone configurations

Top M-LOK Hand Stop Brands and Models

There are 6 primary manufacturers of M-LOK hand stops, each offering different materials, profiles, and price points from $7 to $45.

RailScales Karve-P

The RailScales Karve-P is a polymer M-LOK hand stop made from Heat-stabilized Temperature Polymer Near Infrared (HTP NIR) injection-molded glass-filled high-temp nylon, weighing 0.34 ounces (9.6 g) with hardware and occupying a single 1-slot M-LOK footprint. The Karve-P measures 1.125 inches (28.6 mm) in height, 1.5 inches (38.1 mm) in length, and 0.625 inches (15.9 mm) in width. RailScales ships the Karve-P with a custom Torx T20 fastener and a United States-made 416 stainless steel M-LOK nut. The Karve-P is available in 6 colors: Black, Flat Dark Earth (FDE) Tan, Olive Drab (OD) Green, Sniper Grey, Arctic White, and Coyote. The Karve-P carries National Stock Number (NSN) 1005-01-716-0832 for government procurement. RailScales also manufactures the machined aluminum Karve hand stop, the HTP XOS and XOS-H scales, the Anchor barricade stop, and the RSB rail-mounted stop. The Karve-P is compatible with XOS-H scale panels for a unified grip zone. RailScales products are subject to International Traffic in Arms Regulations (ITAR), Export Administration Regulations (EAR), and Commerce Control List (CCL) export controls administered by the U.S. Department of State.

Arisaka Defense Hand Stop

The Arisaka Defense hand stop is a machined aluminum M-LOK hand stop with a patented ergonomic profile that provides both a rear index point and a forward barricade rest surface in a single unit. The Arisaka hand stop retails at $35 and is available as a blemished (BLEM) unit at $25 with cosmetic imperfections that do not affect function. Arisaka Defense manufactures the hand stop from 6061 aluminum with a Type III hard-anodized finish for abrasion resistance.

Magpul M-LOK Hand Stop Kit

The Magpul M-LOK Hand Stop Kit includes a hand stop, a finger stop or index point, and M-LOK rail covers in a single package, allowing the shooter to configure a complete grip zone across 3 to 5 M-LOK slots. The Magpul kit is available in Black, FDE, and OD Green polymer. The hand stop component provides a rear index surface, while the included rail covers fill open M-LOK slots between the hand stop and other accessories for a smooth grip surface and heat protection.

Bravo Company Manufacturing Gunfighter KAG

The Bravo Company Manufacturing (BCM) Gunfighter Kinesthetic Angled Grip (KAG) is an angled M-LOK hand stop that positions the support hand at a natural wrist angle rather than a vertical grip orientation. The BCM KAG is available in Black and FDE polymer, occupies a 1-slot M-LOK footprint, and is designed for the thumb-over-bore C-clamp grip technique. BCM also manufactures vertical grips, KeyMod accessories, and rail covers for both M-LOK and KeyMod handguards.

Strike Industries M-LOK Hand Stop

Strike Industries manufactures M-LOK hand stops in polymer and aluminum configurations, with the Strike Industries Cobra M-LOK hand stop featuring an integrated finger groove and textured grip surface for positive hand traction in wet conditions. Strike Industries hand stops are available in Black, FDE, and Red anodized finishes.

Budget and Alternative Options

Budget M-LOK hand stops from manufacturers including VISM ($12 to $13) and GunTec ($29) provide basic hand stop functionality in polymer or aluminum at lower price points than BCM and Arisaka. Three-dimensional (3D) printed M-LOK hand stops are available as downloadable files for home fabrication, but 3D-printed hand stops lack the heat resistance and impact strength of injection-molded or machined commercial products and are not recommended for duty or defensive use.

M-LOK Hand Stop Materials

M-LOK hand stops are manufactured from 3 primary materials — polymer, aluminum, and G10 composite — and each material offers different properties for weight, heat resistance, and durability:

• Polymer hand stops (HTP nylon, glass-filled nylon, reinforced polymer) weigh 0.3 to 0.8 ounces (8.5 to 22.7 g), insulate against barrel heat conducted through the handguard, and cost $10 to $25
• Aluminum hand stops (6061-T6 or 7075-T6 aluminum with Type III anodizing) weigh 0.8 to 1.5 ounces (22.7 to 42.5 g), provide higher impact resistance than polymer, and cost $25 to $45
• G10 composite hand stops (fiberglass-epoxy laminate) weigh 0.5 to 1.0 ounces (14.2 to 28.3 g), offer high grip texture even when wet, and resist heat better than polymer — the RailScales Dragon G10 pattern is a textured G10 finish designed for aggressive traction

M-LOK Hand Stop Installation

To install an M-LOK hand stop, insert the T-nut into the M-LOK slot at a 90-degree angle to the slot direction, rotate the T-nut 90 degrees to align the T-nut ears behind the handguard wall, place the hand stop body over the slot, and tighten the mounting screw to 12 to 15 inch-pounds (1.4 to 1.7 newton-meters or N·m) of torque. M-LOK hand stop mounting hardware consists of a US-made 416 stainless steel T-nut and a Torx T20 or 3/32-inch hex screw, depending on the manufacturer. RailScales includes alignment dots on the Karve-P body to indicate correct installation orientation.

Hand Stop Placement

M-LOK hand stop placement depends on 3 factors: shooting style (thumb-over-bore vs. traditional support hand grip), arm length, and handguard length. Place the hand stop at the position where the support hand naturally grips the handguard during a shouldered shooting stance. A hand stop placed too far forward forces the support arm into full extension and increases fatigue during extended shooting. A hand stop placed too far rearward crowds the magazine well and limits muzzle control leverage. Most shooters position the M-LOK hand stop 2 to 4 inches (50.8 to 101.6 mm) behind the handguard's front edge for a balanced grip on a 13-inch to 15-inch M-LOK handguard.

Hand Stops vs Vertical Foregrips

M-LOK hand stops and vertical foregrips serve different grip functions — a hand stop provides a rear index point for the thumb-over-bore grip, while a vertical foregrip provides a forward pulling point for a traditional support hand grip perpendicular to the bore axis. Hand stops weigh 0.3 to 1.5 ounces (8.5 to 42.5 g) and extend less than 1.5 inches (38.1 mm) below the handguard, while vertical foregrips weigh 2 to 4 ounces (56.7 to 113.4 g) and extend 3 to 5 inches (76.2 to 127 mm) below the handguard. The Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF) classifies vertical foregrips as "forward grips" that change the classification of AR-15 pistols (overall length under 26 inches or 660.4 mm) to "Any Other Weapon" (AOW) status under the National Firearms Act (NFA). Hand stops and angled grips do not trigger this reclassification, making M-LOK hand stops the preferred grip accessory for AR-15 pistol builds with sub-26-inch overall lengths.