I have a like new AR15-A2, hasnt shot any 223 rnds out of it yet, just 6 mags of .22 with the .22 kit thats also included in the deal. Its a BUSHMASTER lower receiver with COLT 20" heavy barrel upper receiver in A2 configuration. Comes complete with 223 bolt, carrier and charging handle and a Ceiner .22 conversion kit. Can switch from one cal to the next in 10 seconds or less and no tools or mods needed. The .22 kit is very accurate and alot cheaper then the 223 to shoot. Comes with 1) 30 rnd 223 mag, and 1) 10 rnd .22 mag for 2 mags total. $1350 for the set up or trade for 223, 308 ammo or???. This gun is range ready.