Finally got my son's AR done. Putting a rimed cartridge in a rimless bolt head like the AR is a bit of a re arrangement of stuff but in the end works pretty good.
Heres some pics,









Magazine is aftermarket Desert Eagle 8 rd cap. Target is first group sight in at 30 yards, 5 rds PMC 240 JHP. If I had a crosshair & rear sand bag I would have a clean one holer. Funny no one has made a 44 rimmed AR bolt head for these. I had to mod a 450 bushy bolt and headspace on cartridge mouth to get this right. Ramp out the 6 Oclock lug out of the barrel extension. A few tweaks hear n there and bingo, a nice running 44!