Bravo Company USA BCMGUNFIGHTER AR 15 Enhanced Lower Parts Kit Radio Accessories stable and portable unit CAPACITY:21 stable and portable unit The SIG SAUER MPX Magazine is engineered with precision and expertise to deliver unparalleled performance in high pressure situations This BCM Enhanced Lower Parts Kit includes: BCM PNT Hammer Hammer Spring BCM PNT Trigger Trigger Spring Hammer Trigger Pins Disconnector Disconnector Spring Bolt Catch Bolt Catch Plunger Bolt Catch Spring Bolt Stop Pin Rear Pivot Pin Buffer Retainer Buffer Retainer Spring Magazine Catch Button Magazine Catch Spring Magazine Catch Rear Take Down Pin Selector (Safety) Selector Detent Selector Detent Spring BCM Enhanced Trigger Guard BCM Trigger Guard Pin BCM Trigger Guard Screw BCM Pistol Grip Mod 3 Locking Washer Take Down Pivot Pin Detent Take Down Pivot Pin Detent Spring Mil Spec quality components Made in the USA and to the highest standards Fantastic upgrades to include