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I have two Primary Weapons Systems combination brake and flash hiders. One was mounted on my XCR with no problem. The other was for my DSA FAL. The FAL is supposed to be 9/16x24tpi left hand thread and that's the PWS brake I ordered for it. I had difficulty taking the existing flash hider off the FAL so wound up taking it to my gunsmith to remove it and install the PWS. Turns out, the FAL threads aren't quite 9/16x24tpi. In fact it was off enough that the PWS wouldn't go on. The threads were about .032" too small. 
Since I was planning to put a can on it eventually I decided to have the gunsmith rethread it 1/2x28tpi right hand - the barrel was too small in diameter to cut it 5/8". Checking with PWS, they said I could send the DNTC308 back and exchange it for a FSC30. The FSC is actually 5/8x24 but they also have 1/2x28 to 5/8x24 adaptors for $14.00.
The end goal is to get a SWR Omega .30 can and be able to swap it between the 5.56 XCR, the 7.62 XCR, The FAL, my 300 Weatherby, and my 7mm08 Encore with just a few adaptors for the ones not threaded 5/8x24tpi.
I had mentioned to Aussie Arms that the only other place I saw the 1/2x28 to 5/8x24 adaptor was asking $66.00 and he wondered if the tolerance on the PWS adaptor was accurate enough for the shoulder a can would need. Anybody know anything about this?
Since I was planning to put a can on it eventually I decided to have the gunsmith rethread it 1/2x28tpi right hand - the barrel was too small in diameter to cut it 5/8". Checking with PWS, they said I could send the DNTC308 back and exchange it for a FSC30. The FSC is actually 5/8x24 but they also have 1/2x28 to 5/8x24 adaptors for $14.00.
The end goal is to get a SWR Omega .30 can and be able to swap it between the 5.56 XCR, the 7.62 XCR, The FAL, my 300 Weatherby, and my 7mm08 Encore with just a few adaptors for the ones not threaded 5/8x24tpi.
I had mentioned to Aussie Arms that the only other place I saw the 1/2x28 to 5/8x24 adaptor was asking $66.00 and he wondered if the tolerance on the PWS adaptor was accurate enough for the shoulder a can would need. Anybody know anything about this?