The Mini Fix Pistol by Q if it's not obvious already is the Mini Action version of The Fix in a pistol form. The mini FIX pistol has a smaller receiver and bolt assembly accepts the M4 magazine has a smaller bolt assembly and is offered in 300 BLK.Features: One-piece Receiver 45Adeg Short Throw Bolt Handle Free Float Q-sert Handguard AR/M4 Magazine Compatible Full-length M1913 Picatinny Top Rail Muzzle: Threaded & Tapered Muzzle W/ Cherry Bomb Muzzle Brake Trigger: 2-stage Match AR Controls Weight: 6 Lbs 6 Oz Length (Open): 35.09" Length (Open And Fully Extended): 36.08" Length (Folded): 25.32" Barrel: 16 Inch 1:7 Twist Tapered Profile Stainless Steel Threads: 1/2-28 Accent Color: Gray Adjustable Folding Stock