MK1 MOD 2-M Complete Pistol Lower Receiver SPECIFICATIONS: Lower Receiver: PWS MK1 MOD 2-M Multi-Caliber Lower, 7075-T651 Hard coat anodize, per Mil 8625 Type lll Class 2, AR-15 Compatible Trigger: Mil-Spec Enhanced, PTFE Coated. Trigger Pull Weight: 5.5 - 6.5 lbs. Buffer Tube: PWS Enhanced Buffer Tube with ratchet lock castle nut and end plate set with built-in QD mount Buffer: PWS Enhanced H2 Steel Body Buffer Furniture: Bravo Company USAA(R) Pistol Grip Mfg: Primary Weapons