American Built Arms Company Polymer Picatinny Rail M-LOK 4-Slot

The American Built Arms Company M-LOK 4-Slot Polymer Picatinny Rail is a compact rail section that adds four Picatinny slots of accessory mounting real estate to any M-LOK compatible handguard. Cut from lightweight fiber-reinforced polymer, this rail section keeps your build light while offering strong heat resistance for extended firing sessions.

The top of the rail is machined to true Mil-Spec 1913 Picatinny dimensions, giving you a reliable mounting platform for weapon lights, lasers, backup iron sights, or any other Picatinny-compatible accessory. The base uses the M-LOK attachment system, allowing it to be secured anywhere along the handguard where M-LOK slots are present, giving you flexibility in how you configure your rifle.

At 1.875" long, this rail section provides a small optic or accessory mount point without taking up valuable handguard space. The black finish blends seamlessly with most factory and aftermarket handguards. Installation hardware is included: M-LOK T-nuts and 10-24 x 1/2" flathead screws, so you can mount it right out of the package.