Bought five ProMags for my 15-22. Held 25 rounds. Retrofitted the follower, tab and they held 33 rounds. Functioned and fired 100 % perfectly for me and everyone who used them. Gave the rifle and magazines to my brother. He and his son have had a lot of fun with them. AFAIK, he has had no problems with them. HTH. Sincerely. bruce.

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