Aero Precision lower, Foxtrot Mike upper receiver with 5” barrel. This comes complete with bolt and hardened trigger pins. Sig Sauer Romeo MSR green dot, Magpul pistol grip, SBA3 pistol brace and an Amend2 34 round magazine. This is a Glock compatible lower, with 9 mm magazines. The gun is in great shape with approximately 200 rounds through it.