SOLD - WILL BE LOCKED WHEN COMPLETED WTS:Mk12 Mod1 type SPR upper with only 250 rounds through it, professionaly assembled by Wes Grant @ MSTN. I'm not looking for any trades. The rear sight in the pics is not included. SPECS Barrel: 18" Noveske Stainless 5.56, 1/8 twist, 3-groove profile, MK12 mod2 Profile (no longer in production) special run made for MSTN, M4 extension Gas System: Rifle length Gas Block: Vltor, low profile, pinned w/ set screw Muzzle Device:OPS Inc 12th Model Brake and Collar Upper Receiver: Vltor Mur-1A w/ M4 feed ramps FF Rail:Knight's Armament Rifle Length URXiii w/ flip up front sight, KAC HandStop, 3 rail covers (not pictured), (4) QD swivel sockets ASKING:$1175, Shipped or $1150 Shipping:CONUS ONLY Terms: First to post "I'll take it" gets it. Please email me questions. You must post to buy.