New 9.4" Barrel Threaded 15mmx 1. Included G36 P-mag. This is a piston system, and these are designed to run 5.56 Nato ammo and may not cycle properly with lighter .223 or steel cased ammo. High backpressure suppressors may cause damage to the gas system. These are compatible with our pistol braces. The TG36CP features a Picatinny top rail with built-in front and rear sights. Ambidextrous charging handle and fire controls, paddle mag release and is compatible with most G36 parts and accessories. Specifications: 5.8 Lbs 19.7" OAL w/muzzle device* 1in7 Twist 9.4" Black Nitride Coated Barrel Inside and Out 15mmx1 Pitch Injection-Molded Glass-Filled Nylon Receiver Piston Actuated Gas System Ambidextrous Controls Comes with 3-piece Pic Rail Set 28.3" Overall w/Stock" Sold Separately for SBR's