Re: Dedicated .22LR AR or 5.56 upper with conversion
I went through the same thing. I purchased a drop in unit, and once I found the ammo it liked it ran ok, I would have a jam every 2-3 mags. Sometimes more sometimes less, never really complained it was just bought to be a fun little plinker. As far as accuracy goes it was ok, I could chase a water bottle around at the 50yd berm with no problems. Never tried grouping it because I just plinked with it using a reflex sight.
Then I bit the bullet and ordered a Nordic Components dedicated upper, and after finding the ammo it liked have had no functional issues with it and I have about 4000 rds through it to date. It simply runs like a top. Clean it up occasionally and keep it oiled and it just keeps running. Using the same reflex sight I can take out clays on the 100yd berm with regularity.
Needless to say my suggestion is save the 100.00 or so bucks and get a dedicated upper, and a bunch of Black Dog mags and have some fun.
AS