The Samson KeyMod 4 Inch Rail Kit (brand part no. 040201101) is a Picatinny rail section that clamps directly onto any standard KeyMod hole, giving you a rock-solid anchor point for an accessory that needs a true Picatinny interface. Samson’s KeyMod Evolution series cuts slots at the 3, 6, and 9 o’clock positions, so you can mount the rail in the orientation that best suits your grip or accessory. The kit is finished in black anodized aluminum to match most handguard finishes and requires no separate hardware to attach beyond the included clamp screws. It is a simple way to add a 0 MOA Picatinny mounting point to a KeyMod-equipped rifle.

Key Specifications

• 4-Inch Rail Length gives enough real estate for lights, lasers, or sights.
• KeyMod Attachment clamps directly to any standard KeyMod hole.
• 3, 6, and 9 O’Clock Slot Positions allow flexible mounting orientation.
• Picatinny Interface accepts standard Picatinny-mount accessories.
• 0 MOA Mounting keeps accessories aligned with the bore with no built-in cant.
• Black Anodized Finish matches common handguard finishes.

Frequently Asked Questions

What handguards does this rail fit? Any handguard with a standard KeyMod hole.

What positions can the rail mount to? The 3, 6, and 9 o’clock KeyMod slots.

Buy the Samson 4-Inch KeyMod Rail Kit

Add a solid Picatinny mounting point to your KeyMod handguard with a Samson rail kit from our gun parts and accessories selection. Order online and we will ship it straight to your door from our Lubbock, Texas gun shop.