CMMG 22 LR Conversion kit

jr_roosa said:

I have the CMMG plastic one in the parts box. I swapped it for a real one on my dedicated upper.

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So what’s the difference between your CMMG and your “real one”? Other than the fact that the CMMG is plastic?
What do they do to it to keep the little cases from getting stuck between it and the receiver?

I have a dedicated 22lr AR, a HK 416 D. It’s a great rifle and very accurate, but I like my conversion BCG because I can use my regular rifle to train with.

rskent said:

So what’s the difference between your CMMG and your “real one”? Other than the fact that the CMMG is plastic?
What do they do to it to keep the little cases from getting stuck between it and the receiver?

Click to expand...

Basically it doesn't have the channel for the gas key. There's just a little cutout for the gas tube if you are using it with a conversion kit so that it will fit a normal upper.

Ironically, in my dedicated upper there is no gas tube, so the cutout is a perfectly 22 LR sized cavity above the bolt.

Again, I've never had a problem either way with cases not ejecting...knock on wood.

-J.

Brownell's has the CMMG conversion kit with three mags for $170 right now.
https://www.brownells.com/rifle-par...ku100022952-54549-191643.aspx?sku=100-022-952

Primary Arms has it for $160
https://www.primaryarms.com/22BA651

jr_roosa said:

Basically it doesn't have the channel for the gas key.

Click to expand...

Thank you

There's no doubt that the dedicated upper is the best way to go, but i like having the option of dropping the conversion kit in my rifle or my AR pistol.

I have one of each. They both have pluses and minuses.

If I had unlimited budget I would clone my m4 upper with the CMMG dedicated upper and swap uppers instead because the POI shift is significant with the adapter.

Instead I keep the money in my pocket and I just adjust the red dot.

-J.

Armored farmer said:

There's no doubt that the dedicated upper is the best way to go, but i like having the option of dropping the conversion kit in my rifle or my AR pistol.

Click to expand...

Sighting in the Cmmg 20" 22lr barrel
15 rounds each...cause I can easily afford 22lr ammo