20" Aug M-Lok Handguard w/ Top Rail

The Underworld Arms Aug M-Lok handguard is 8.25" long and is machined from T6-6061 with a black anodized finish and includes a top rail for extending the iron sight radius. The handguard includes a black oxide 304 SS locking nut, a black oxide 304 SS mounting nut, and a black polymer centering plug for use during install.  When installed the quick change barrel feature is functional and gas adjustment is accessible, the original grip can be left on or removed.  The UA Aug Handguard mounts to the barrels bayonete threads using our proprietary hybrid method that takes inspiration from an AR15 style barrel nut and the Aug's locking flash hider nut. Be sure your barrel has these threads, some 20in augs sold during the clinton era assualt weapon ban do not have them.  This 8.25" Aug handguard is designed for 20in barrels, if you have a 16in barrel you will need to purchase our 16" Aug handguard HERE.  This handguard will fit on A1, A2 and A3M1 receivers, it is not compatible with SA or A3M2