05-22-2014, 03:49 PM
usmc1371 Wrote:I am building an 18 inches with rlgs. I plan on using a carbine lower. I have m16 bolt carrier. Which buffer would work best?
What gas port diameter? Have you already had the barrel profiled?
With 18" RLGS, they run better with longer bullets in the 120-129gr range, with a larger port, since port pressure is lower than MLGS. You might consider lower weight carbine buffer here, and have an H2 on hand in case you get early unlocking, but 18" RLGS Grendel's tend to be under-gassed a bit without attention to the gas port, especially if you shoot lighter pills with weaker charges.