Hi Jim,

Have you considered the "Better - Mag" adapter metal insert for the mag well? This conversion allows use of the S&W M&P 15-22 magazines. There doesn't appear to be any adaptations for the Bremmer / M261 other than Black Dog magazines. But these only have a very basic bolt hold open function (the follower jams the bolt open after the last round). I am looking at adapting the Catch22 bolt release catch to see if I can get that to work with the Black Dog magazines.

Regards,

John.
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