Description
The Guntec USA AIR-LOK is a 5″ M-LOK free-float handguard built for the AR-15 platform and machined from aluminum with a matte anodized black finish. Its signature monolithic 1913 top rail runs the full length of the handguard, giving you a continuous optics mounting surface while M-LOK slots at the 3, 6, and 9 o’clock positions accept lights, lasers, grips, and other accessories.
Designed as a true free-float handguard, the AIR-LOK clamps onto the included barrel nut without contacting the barrel, so handguard pressure does not shift point of impact. Guntec’s lightweight modular design trims weight with triangle lightening cuts throughout the body, keeping the total assembly (handguard plus barrel nut) at roughly 6.8 oz. The rail slides over the barrel nut and locks down with Guntec’s compression hardware for a solid, repeatable fit.
This listing is for the 5-inch length, a natural fit for compact AR-15 builds where a short, full-length top rail is desired. The handguard is Made in the USA by Guntec USA and ships with the barrel nut included so you can mount it directly to a standard AR-15 upper.









