These are all brand new parts. Unless otherwise mentioned they are OEM. For people building Jard180s, crusader Crypto or Raven 9s in 223, many of these items are vital components. Steel gas block, non-adjustable, .750" gas journal $35 Luth Steel ar15 adjustable gas block .750" gas journal $50 Carbine length gas tube $40 Mid length gas tube $15 Rifle length gas tube $15 Anderson arms lower parts kit $130 Buffer tube kit (includes castle nut) $50 Carbine length buffer spring $20 Carbine weight buffer $5 H carbine weight buffer $30 H2 carbine weight buffer $40 LBE 223/556 Bolt, firing pin, cam pin kit $125 - For muzzle devices, please see muzzle devices ad For barrels, please see barrel specific ad For magazines please see magazine specific ads - Shipping available at actual cost or pick up in SE Edmonton. Please click on my user name for other ads or information on shipping policies. Discounts available for multiples of the same item (4 or more)