I bought four AAC suppressors back in 2012 that used the 51T and 90T QD interface. It became apparent that there was a problem with the QD design and I set about modifying one of them to see if I could improve the situation. In 2018 I sent the M4-2000 to a machine shop along with a drawing to...
I'm not sure how familiar folks are with AREA 419 but they seem to have great products that solve some problems.
https://www.area419.com/
About 18 months ago I had an AAC M4-2000 modified to work with the KEY-MO from Dead Air. I had the 51T ratchet interface removed and the inside threaded...
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