After researching on this forum and others, I was under the impression the moe stock would fit just fine on the 22, however I am having the problem pictured below, there is not enough room for the tension bolt to pass through. This is the mil-spec moe, is it possible magpul switched to commercial diameter for the new sport? It seems like my only option here is to drill to allow the bolt to pass through, but I dont really want to do that beause if I ever go back to adjustable, there will be a visible hole in the bottom of the 'buffer tube'. Any thoughts / advice?

After finding a few more threads, some people mentioned having to file this piece down...I wish there was a different option

In your second picture, you got the butt stock on (minus the tension bolt). Is there any wiggle? IF NOT, then you have the correct butt stock / buffer tube combination.

I just compared my 15-22 buffer tube to a AR-15 buffer tube. The 15-22 buffer tube maintains the bottom 'rail' all the way to the lower receiver. An 15-25 buffer tube DOES NOT.

This is probably done for strength since the 15-22 buffer tube is molded as part of the lower receiver, whereas in an AR-15, the buffer tube is separate and screwed in.

Bottom line, looks like you'll need to drill; no worries though; other than a little less strength, you would still be able to replace the stock at some point in the future with a collapsible one (assuming your state allows it)

Attached Images

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Thanks for the reply, yes it fits like a glov, def stil mil spec. I did drill it out, it fits great, the pull is so much better than the adjustable pinned at the longest setting. Being in NY its very unlikely Ill have an adjustable stock on this, but it does suck that if I do, the hole I drilled for this will be visible with the stock pulled back. Still happy with the purchase