A good look at the Echo1 P9 PCC AEG in this review by ASTKilo23... "After what seemed like a long hiatus, Echo 1 has recently started producing new AEG, several of which they were very kind in sending over for review. Their new P9, a pistol-caliber-carbine version of an M4, boasts well-made internals and a fresh external design. Watch the review, and see if the Echo 1 P9 is a good choice for you."