MK1 MOD 2-M Pistol Lower Specs: - Lower Receiver: PWS MK1 MOD 2-M Multi-Caliber Lower T6 7075 Forged Anodized 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: SB Tactical SBA3 Bravo Company USA Pistol Grip