11-26-2011, 10:59 AM
I removed the factory FSB and replaced it with one that would allow me to use the '74 muzzle brake. I've shot it and determined that it is on there straight. All I have left to do is pin it. The FSB came with a pinning kit from Dinzag, and one pin is longer and one pin is just a tad shorter. Also, there are two drill bits that came with the kit as well (one is bigger than the other). Can someone tell me why one is shorter than the other, and which one is supposed to go where?