20" AR-15 A-3 Flat Top rifle Barreled upper

The standard AR-15 M-16 flat top rifle barreled uppers pre and post ban models available. Most shown will be Pre ban config.

20" AR-15 A-3 Flat Top rifle Barreled upper is head spaced, and ready to mount to your lower receiver after installing the bolt carrier group, see options.  Once you have an assembled lower with the parts installed and mount the upper,  this is an operational firearm 5.56 NATO and can shoot both .223 and 5.56mm mil surplus rounds.
20 Heavy Match Barreled Uppers Pre Ban A-3 Flat Top