I talked to the Col about it. He said something about them using another type of metal, stainless? Try ko muna 'to kasi mas mura eh. ;f
My current reverse plug has survived close to 7k even with an 11# recoil spring (but with a thick buff). But in only about 600 rounds nasira agad nung tinanggal ko na yung buff even when I bumped the spring to 13#.
-- Clear your Mind of CAN'T --
*** "MULTIPLY" me :) ***