Adams Arms Agency Base Carbine, AR-15 style, 5.56x45 NATO, 16" barrel Thermold 3-30 round magazines. LNIB - Mil-Spec Forged 7075-T6 Lower/Upper Receiver, Type III Class II Hard-coat anodized finish, M4 feed ramps,1913. Picatinny flat top with dry lube internal finish and laser engraved T-markings. ADAMS ARMS PISTON SYSTEM: A short stroke free floating piston system - Self-Cleaning. Carbon and gases are expelled forward, away from operator. Corrosive resistant coating processes. Harmonics are not transferred into the barrel. Adjustable gas settings for various applications. Doesn't vent directly to atmospheric pressure; eliminates flash signature and super sonic crack which is optimal for night vision and lessens fire. Caliber: 5.56x45mm Barrel: 16" 4150 CM Melonited Barrel; 1:7 twist @ 6.2 pds. Adams Arms no longer sells the Agency model. Now only sold to LE & Military as P1 model For $975. (https://adamsarms.net/product/rifle-p1-5-56-16/). $ 700 Contact Ernest 979 350 8808.