AERO PRECISION M4E1 Stripped Lower Receiver ODG

Spikes Tactical ST-T3 Tungsten Heavy Carbine Buffer 5.5oz.

Strike Industries AR-15 Enhanced Lower Receiver Parts Kit with Trigger Group

Sons of Liberty Gun Works Blaster Starter Kit AR-15 Lower Parts Kit

Bravo Company (BCM) Mil-Spec AR-15 Buffer Tube Kit Aluminum Matte

Strike Industries AR-15 Enhanced Lower Receiver Parts Kit

Luth-AR .223-M-BAP Mil-Spec Buffer Tube Complete Assembly For AR-15 Rifles

Strike Industries Ambi AR-15 Magazine Release Assembly Black