A few weeks back I placed an order w/Brownells for a CMMG .22lr conversion kit w/27-round magazine. I got an email on 03NOV that it shipped, and it arrived today
The planets aligned and I managed to squeeze out of the house this afternoon to try it out. I was in such a hurry I didn't bother to give it a quick once over before heading to the range - specifically I didn't bother to lube it beyond the sparse oil that was on it from shipping (more on that later)... gotm4 was at the range, and I got to meet 9x19, and Pk14 - great to meet you two! LittleLebowski was also there, but he was with someone on the line so I chose not to interrupt/introduce myself...
This is the first conversion unit I've ever used/laid hands on - so I don't know if it's better than any other. It seems to be pretty solid, and functions smoothly. It weighs 10.1oz, ~1.9oz lighter than the Colt BCG that I pulled out of my 6920.
I ran 250 rounds of American Eagle 5022 40gr lead ammo down the pipe with minimal problems. What bobbles I did experience I can almost certainly attribute to the complete lack of lubricant! I only loaded the mags w/20 rounds at a time (it was tough to get 23-25 rounds loaded, and I don't think I'd ever get 27 rounds in there). Once I've got 1-2k down the pipe and it's all settled in I'll try to load the mags to capacity.
After the 250 rounds of .22lr, I switched the 6920 BCG back and fired 20 rounds of XM193 in an effort to clean out some of the funk.
POI was pretty much spot on factoring in the holdover while I was shooting at 10 yards - obligatory pic attached:
Shooting .22lr from your AR is a hoot I can now shoot the snot out of this and not feel guilty about using up my stash or how much it costs. Additionally, my 7yo daughter is going to have a blast with this (heck, I've still got a grin on my face).
Next up is a few more Black Dog magazines and a ton more ammo.
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