I'm going to cut my Bushmaster 16" HBAR down to just over 14.5 and install a Phantom FS soon. I was wondering if there will be any problems with my gas system and the shorter barrel? Will I have to enlarge the gas port to make sure that it will cycle properly? BTW, I'm shooting primarily XM193/Q3131A and I'll also be shooting XM855 also.
Thanks in advance.
Sarge