6061 T6 aluminum construction CNC machined Hard coat anodized finish Mid-length standard height AR 10 receiver Free floating New take down pin design No need to remove front sight base Clamp prevents barrel nut rotation 1913 Mil-Spec rails 4 rails on handguard Venting holes between rails Bottom rail is removable to accommodate the M203 Forms a continuous top rail Rails do not align correctly with the DPMS A3 height 308 upper receiver Your AR-10 rifle deserves the best accessory mounting system you can get, that’s the Samson STAR-10 forearm. The STAR-10 fits the mid-length standard height AR-10 Mfg: Samson Manufacturing Corp SPECS: 6061 T6 aluminum construction, CNC machined, Hard coat anodized finish, Fits mid-length standard height AR-10 receiver, Free floating, No need to remove the front sight base, clamp prevents barrel nut rotation, 1913 Mil-Spec rails, 4 rails on handguard, Fenting holes between rails, Re