A friend of mine has that kit on his AR. I haven't shot it, but he's reported good quality. I'm sure someone else with chime in with more info shortly, but at that cost I wouldn't have a problem getting it.
The only problem with .22lr conversion kits is the twist rate on AR barrels. They're much too fast for the .22, causing it to overspin. Within 25 yards it's no big deal, outside of that range, they can be very inaccurate.
For just plinking around with, they're fun and cheap, but don't expect great accuracy.
"Breathe when you can, shoot when you should."
Get the stainless model, keep it lubed, and use decent ammo.
"As an American, I was not so shocked that Obama was given the Nobel Peace Prize without any accomplishments to his name, but that America gave him the White House based on the same credentials"...Newt Gingrich
The problems we face today are there because the people who work for a living are outnumbered by those who vote for a living.
I have 2 of the cmmg stainless kits and I have put thousands of rounds through them.
I have one for my 16" ar and one for my ar pistol. They both work great. I use them to train my two boys to shoot. I have not had any feeding problems with mine. They are good cheep fun
Mine will shoot under 2" groups at 50 yards with a 1-9 twist. I think the cmmg kits are recoil operated. Mine recomended the federal hp bulk ammo. I use the 550 rd box from
wally world. My 2 boys fired 1500rds in one day with less than 10 ftf's. The gun was bleeding gunk but it was still working fine. They are good practice for big kids too
get plenty of extra mags.
I have been on the fence about getting one of these kits as well. As much as I'd love to pick up an M&P 22, it's grad to beat this price. All my research is good on these, accuracy is not "as good" as a true .22LR but still good. That's good enough for me for playing around. I have a marlin model 60 for long distance .22 shooting. I say go for it, I'll be picking one u first of the year I'm sure.