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Posted: 5/19/2010 1:19:30 AM EDT
| I have a Bushmaster A2 upper with the 1/9 heavy barrel and pinned AK74 style brake. I am replacing the Bushy barrel with a 16" M4 style 1/7 BCM barrel, which has the milled slots for a FSB. Problem is, the milled slots aren't matching the holes in the FSB I have on hand. What are my options on finding a FSB that will match up with the slots? Am I better off using a set screw or clamp on style FSB? Actually, do they even offer a standard FSB that utilizes set screws or clamps for a .750" barrel? |
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