LBE Unlimited Essentials Kit AR-Platform. Features : Bolt catch plunger Bolt catch spring Bolt catch roll pin Buffer retainer Buffer retainer spring Disconnector spring Hammer spring Trigger spring Hammer pin Specifications for LBE Unlimited AR-Platform Essentials Kit: Manufacturer: LBE Unlimited Color: Black Gun Make: AR Platform Gun Type: Rifle Package Contents: LBE Unlimited AR-Platform Essentials Kit Bolt Catch Plunger Bolt Catch Spring Bolt Catch Roll Pin Buffer Retainer Buffer Retainer Spring Disconnector Spring Hammer Spring Trigger Spring Hammer Pin LBE Unlimited ARESNTL: Essentials Kit AR-Platform