Arisaka Defense M-LOK Hand Stop Black - HS-M

Arisaka Defense Hand Stop Anodized Finish Black Fits M LOK HS M UPC 850036188124

Product Description

The Arisaka Defense Hand Stop for M-LOK Handguards in Anodized Black (MPN: HS-M) is an ultra-compact, low-profile grip accessory engineered to optimize support-hand placement, rifle control, and barricade stabilization on modern tactical carbines. Purpose-built for shooters using the C-clamp or thumbs-forward shooting technique, this hand stop provides an ergonomic physical indexing reference point without adding excessive weight or snag hazards to your handguard setup.

Precision CNC-machined in the USA from lightweight 6061-T6 billet aluminum, the Arisaka Hand Stop features a subtle, radiused profile with front and rear serrated texturing for a positive, non-slip contact surface. Treated with a MIL-A-8625 Type III hardcoat anodized black finish, it stands up to harsh operational conditions, extreme barrel heat, and heavy field wear.

Occupying just one M-LOK slot, the HS-M can be mounted facing forward as a rear hand stop or backward as a forward index/barricade brace. Complete with steel M-LOK hardware, it installs securely in minutes on any standard M-LOK handguard, making it an essential control upgrade for duty rifles, short-barreled rifles (SBR), and personal defense weapons (PDW).

Armorer Bench Notes & Real-World Staging Guidance:
Fitment Matrix: Compatible with all standard M-LOK handguards and forends (requires 1 full M-LOK slot space). (Note: Ensure internal handguard clearance behind the M-LOK slot to prevent the mounting screws from touching low-profile gas blocks or barrel surfaces during installation).

1. Perform a complete firearm safety check: drop the magazine, pull the charging handle rearward, lock the action open, and visually/physically inspect the chamber to verify zero live rounds are present.
2. Thread the included M-LOK T-nuts onto the mounting screws until only a few threads are engaged.
3. Align the T-nuts vertically and insert the hand stop assembly into the chosen M-LOK handguard slot.
4. Apply forward pressure while tightening the screws to ensure the T-nuts rotate 90 degrees and engage the internal lip of the M-LOK slot properly.
5. Torque the mounting screws to 15 in-lbs using an inch-pound torque wrench and a hex driver.
6. Verify the hand stop is seated flush and firmly secured before range deployment.

Key Features

• Ultra-Low Profile Footprint: Compact geometry occupies only 1 M-LOK slot while keeping hand placement natural and streamlined.
• Dual Orientation Design: Can be mounted forward as a hand stop or backward as an index/barricade brace.
• CNC-Machined 6061-T6 Billet Aluminum: High-strength aircraft alloy chassis delivers exceptional impact resistance at under an ounce.
• Type III Hardcoat Anodized Black Finish: Non-reflective surface treatment resists chemical wear, heat degradation, and abrasion.
• Textured Contact Surfaces: Subtle serrations on both faces ensure a positive, slip-free grip under wet or gloved conditions.
• Made in the USA: Built to exacting tolerances for professional duty and defensive carbine setups.

Product Specifications

• Brand: Arisaka Defense
• Model/Series: Hand Stop for M-LOK Handguards
• MPN / SKU: HS-M
• UPC: 850036188124
• Attachment Interface: M-LOK (1 Slot)
• Material: 6061-T6 Billet Aluminum
• Finish / Color: Type III Hardcoat Anodized Black
• Mounting Hardware: Steel M-LOK Screws & T-Nuts Included
• Height: 1.3"
• Weight: 0.8 oz
• Country of Origin: USA