Home CMMG Better Mag Rimfire magazine Adapter – CMMG MK4 .22lr Part 1.

Better Mag Rimfire magazine Adapter – CMMG MK4 .22lr Part 1.

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My first workshop video – fitting and a quick over view.

For part II.

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3 COMMENTS

  1. If you can help. I bought this adapter and installed it easy enough into the lower receiver following your video. For some reason the bolt will not lock back when I put in the magazine and it will not lock even if I do it manually. I don’t what is the problem.

  2. Hi Practical Gunner Found your video very helpful My Better- Mag Arrived by first post today having been waiting for approx 10 days from Brownel UK (USA) I have a CMMG AR15 When attempting to fit it found it was so tight it would not start in the mag well did try with a German made AR lower the same found the supplied instructions about as much use as a Trap door on a rowing boat Then i found Your Video it gave me the Confidence to Sand down all the High spots i used a marking Pen to show the Rub Marks When Sliding in to the Mag-well then bit by bit sanding until i got a good fit So once again THANKS Paul.

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