COLT COMPETITION RIFLE CRE-18 The Colt Expert CRE-18 has an 18" Match-Grade stainless steel custombarrel, 6 groove button-rifling with an 1/8 RH twist. 223 Wylde chamberaccepts SAMMI-spec .223 ammo and NATO-stamped 5.56x45mm ammo. Rifle LengthGas System, Low-Profile Gas Block, Custom COLT Muzzle Brake, Hogue 12'Knurled Floating Handguard. Precision-fit FORGED Upper and Lower Receivers(forging stamp on upper receiver). Flat-top upper receiver with PicatinnyRail. Proofed and Magnetic Particle (MP) Inspected Bolt. Badger OrdnanceExtended Tactical Latch on COLT Competition Charging Handle.Nickel-Teflon-coated Match Trigger. Magpul MOE 4-Position Adjustable Stock.Magpul Trigger Guard, Hogue Grip, Magpul Magazine included (1 30 round). SPECIFICATIONS: