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9/22/2017 12:11:25 AM
Posted: 6/28/2003 5:39:49 AM EDT
I bought a bushmaster ak-74 brake for my ak and it will not screw on. It seems that the thread pitch is a little coarser than on my ak. I believe that the brakes thread pitch is 14x1.25 while on my ak it's 14x1. I also tried it on an AMD-65 kit barrel and it wouldn't screw onto it either but the AMDs brake will screw onto my ak no problem. Please be aware of this.
Link Posted: 6/28/2003 8:11:07 AM EDT
Bet that's because the B/M's are made to mil-spec !! (Choke, gasp, strangle, NOT !!)

My humble apologies but that B/M claim has always struck me as particularly ludicrous.
Link Posted: 6/29/2003 9:17:50 AM EDT
Are you sure you don't have one threaded for an AR 1/2" x 28?
Link Posted: 6/29/2003 1:13:42 PM EDT
[Last Edit: 6/29/2003 1:14:17 PM EDT by jimtash9]
It screws on for about one turn then stops. If it was for an ar-15, I doubt it would screw on at all. I think that they just got their thread pitch wrong. I will contact them on Monday.
Link Posted: 6/29/2003 7:39:54 PM EDT
Yeah, right hand vs. left hand thread should be obvious.
Link Posted: 6/30/2003 11:43:46 AM EDT
Believe it or not, 10 or so years ago, I purchased an AK-74 brake from Bushmaster for my Clayco AKS and it wouldn't go on either. I can't believe they haven't fixed it yet. I sent mine back. I wonder how many other people have purchased them.
Link Posted: 6/30/2003 4:09:12 PM EDT
I called them today and the response that I got is that the brakes are made for pre-ban chinese models only. I thought that 14x1 was standard for all models. Go figure.
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