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Questions on parts before I order for deAR22 build (fosscad.io)
submitted 6 months ago by noah@fosscad.io to c/ark@fosscad.io
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Originally posted by u/cuban11182 at 2025-06-28T21:46:16Z

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For the release on the deAR22 do I just need to purchase a dedicated 22 barrel like this: BoreBuddy Blaster 22lr Barrel (Lengths: 4.5, 7, 16") - BoreBuddy https://share.google/s6h6ONiznGBIqtXkU

And a collar like this: 22lr Barrel Collar - BoreBuddy https://borebuddy.com/product/22lr-barrel-collar/

I already have the CMMG drop in bolt carrier group.

If you recommend or suggest another setup, please let me know.

Thanks in advance.

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[-] noah@fosscad.io 0 points 6 months ago

u/kaewon · 2025-06-28 22:43:17 UTC · score 2

If you have the 556 conversion bcg then you can use a 556 barrel. Or if you want to use a 22lr barrel then you will need to buy the 22lr collar. 556 barrels are cheaper but accuracy won't be good with the twist rate.

They sell dedicated 22 bcgs so you don't have to buy the collar separately and also sell barrel combos to get everything you need for cheaper. I know that's too late for you since you already bought it but for anyone else or if you ever build another, buy the combos and save some money. Rtb is the cheapest place I know.

this post was submitted on 12 Oct 2025
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