I have a 20" Upper Fixed Handle, but has a YHM Quad Forearm. It is a Rock River Arms Upper. It would be worth more than your Bush Master Upper with stock handguards. Do you have anything else you can trade in addition to, if you want to make the trade. Looking for OD Green handguard, 30 rd OD Mag, and OD Green AR Stock.
forgive my ignorance but is your bushmaster 5.56 or .223 ? also is it interchangeable with armalite m15 ? if so i have a 20" armalite if your interested. it's the one on top.
again,forgive my ignorance but i have no idea. i know rock river arms upper (the other rifle in pic.) works fine, originally bought the armalite nib after katrina ,then the nib rra carbine upper for it ,then after gustave my wife presentented me with a nib rra lower to complete the 2 rifles.