I guess my first post was deleted because I updated by posting and not editing, my apologies. So, once again, I have an A1 upper for sale. This includes barrel, gas tube, upper reciever, bolt and bolt carrier, triangular handguards, everything you need to pin on your lower and be ready to go. The reciever has a C and a K stamped on it below the adjustment knob. The bolt carrier is semi-auto and is stamped D. The actual bolt is stamped MP. The barrel is stamped C MP CHROME BORE. Everything is in good condition, rifling all still very good. I have put maybe 300 rounds downrange with it. I don't know how many were shot out of it before I owned it. I also have an A1 buttstock for sale. This includes the stock, buffer, buffer spring, lower reciever extension and screw. I will throw in an A1 pistol grip. I am asking $370 plus shipping for the upper and $45 plus shipping for the buttstock.
Please e-mail me at email@example.com
EDIT: Also willing to trade. I am looking for an upper with maybe a 16 (or 14.7 w/ perm flash hider) inch barrel with A3 reciever, complete with bolt and b/c. Something like the M4 type handguards is preferable. Would be willing to trade and include some cash.
EDIT: Thanks to JosephR