The DPMS free floating quad rail features 4 picatinny rails for mounting accessories. This handguard is constructed of aircraft aluminum with a mil-spec hard coat anodized finish. This handguard is designed to match the Low-Profile LR-308 receivers, which are generally the A3-style uppers. It will also work with high profile receivers, but the top rail height will not match. The quad rail uses an included barrel nut to attach to the upper and a lock ring secures the handguard in place. An LR-308 barrel nut wrench and receiver block is required for installation.
- The DPMS low-profile receiver will measure 1/8" thick from the top of the receiver rail to the charging handle cut out.
- This rail will work with high-profile receivers, but the top rail of the handguard will not match the height of the receiver rail.