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AR-15 Uppers, Kits, Rifles, Pistols & Parts. ar15depot.com is your one-stop shop for all your AR-15 rifle needs. Shop complete AR-15 rifles and AR-15 pistols, upper receivers, lower receivers, build kits, AR-15 parts, etc. Also, shop our selection of 5.56 ammo by some of the industry's best brands. ard american rifle depot
These ANTI-ROTATING trigger pins prevent trigger mishaps and improve mechanical reliability. The threaded screws "lock" the pins into the receiver, and prevent uneven wear that can lead to premature breakage.