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bruchi
Posts: 2,581 Senior Member
When is not one thing is another, help with dedicated 22LR!

Some time ago I got a sweet deal on a conversion kit so I could shoot 22lr on my AR's, a stainless steel deal labeled as being Brownell's brand, think is the same as a CMMG one, I might be wrong, it came with one magazine, also Brownell's that is a jamomatic, to be fair buddy has same mags and those work fine on my rifle.
So I have a complete lower laying around and I see that CMMG makes a dedicated 22LR barrel with the "correct" 1:16 twist, I also have a spare DPMS upper and a simple free float handguard. I order the barrel and a dedicated 22LR CMMG charging handle , pretty much all I need to assemble the thing but that stainless steel, Brownells conversion bolt would not fit, problem one.
I ask my local AR guru and he tells me to get another stripped upper as that DPMS is out of spec, got the cheapest one I find and it fits great, also got some Black Dog Machine 22 LR AR magazines, now I put on some plastic orange snap caps to test it and they won't feed with those mags, do fine with the Brownell mag I got which I DON'T WANT , problem two.
I try on my brother's Ciener conversion bolt and with that one they feed fine, so I swap bolts with him and seems we both got working rifles!... not so soon.
Ge home and put the Brownells 22lr conversion bolt on my brother's AR and it won't fit so I am bolt-less again, problem three!
Guess what? My brother's AR is a DPMS... I am hoping that come Saturday at the range the Black Dog Machine magazines will feed real ammo instead of the cheap plastic snap caps with my Brownell's conversion bolt or I will have to unload it and find one that works with my setup!
So I have a complete lower laying around and I see that CMMG makes a dedicated 22LR barrel with the "correct" 1:16 twist, I also have a spare DPMS upper and a simple free float handguard. I order the barrel and a dedicated 22LR CMMG charging handle , pretty much all I need to assemble the thing but that stainless steel, Brownells conversion bolt would not fit, problem one.
I ask my local AR guru and he tells me to get another stripped upper as that DPMS is out of spec, got the cheapest one I find and it fits great, also got some Black Dog Machine 22 LR AR magazines, now I put on some plastic orange snap caps to test it and they won't feed with those mags, do fine with the Brownell mag I got which I DON'T WANT , problem two.
I try on my brother's Ciener conversion bolt and with that one they feed fine, so I swap bolts with him and seems we both got working rifles!... not so soon.
Ge home and put the Brownells 22lr conversion bolt on my brother's AR and it won't fit so I am bolt-less again, problem three!
Guess what? My brother's AR is a DPMS... I am hoping that come Saturday at the range the Black Dog Machine magazines will feed real ammo instead of the cheap plastic snap caps with my Brownell's conversion bolt or I will have to unload it and find one that works with my setup!
If this post is non welcomed, I can always give you a recipe for making "tostones".