grandslamDK forge produced upper receiver, stands for Donkey Kong. In reality these were made by Dixie Tool and Die/Kaiser Aluminum and they were found on older bushmasters as well as being USGI contract spares so I've read. In excellent condition with no noticeable finish wear. Comes with a matching CH. No M4 feed-ramps. Would be great for a C7 or 723 carbine build. Price is shipped and firm. Not looking for any trades currently. Cross-posted
