TacFire 10.5inch UNASSEMBLED 5.56 NATO PISTOL BUILD KIT BLACK. 5inch UNASSEMBLED 5.56 NATO PISTOL BUILD KIT Specifications for TacFire 10.5in Unassembled 5.56 Nato Pistol Build Kit: Manufacturer: TacFire Caliber: 5.56x45mm NATO Color: Black Magazine Included: No Package Contents: TacFire 10.5in Unassembled 5.56 Nato Pistol Build Kit TacFire PK556-LPK-10: 10.5inch UNASSEMBLED 5.56 NATO PISTOL BUILD KIT BLACK