Rainier Arms Rainier Industries Pro Series Mk2 Quad-Rail AR-15 Handguard Black 12.55 in RA017. To achieve this we designed it an extended aluminum barrel nut and larger stainless steel mounting lugs for better rigidity to maintain a mechanical zero....
Rainier Arms Rainier Industries Pro Series Mk2 Quad-Rail AR-15 Handguard Black 12.55 in RA017. To achieve this we designed it an extended aluminum barrel nut and larger stainless steel mounting lugs for better rigidity to maintain a mechanical zero....