Plumcrazy Firearms Gen II Complete Lower Receiver w/ M4 STK

Plum Crazy AR-15 Improved Gen II Complete Lower Receiver with Buffer Tube and Collapsible Stock. Based off a Billet Aluminum design where all others are of a less superior Forged design, ET Arm's are reinforced in all areas of concern and the strongest available on the market bar none! Has an internal pocket radius in the GEN 2 design toward the rear of trigger which eliminated the back strap from breaking. Has a Reinforced water line on our receiver, all others do not have this upgrade. They are impervious to gasoline, acid, acetone, kerosene, and will not break after being dunked in liquid nitrogen and thrown onto a concrete floor unlike aluminum shatter!