Just finished building a 20" A2 gun, it's all Colt with an off brand lightweight 20" barrel. The only recoil spring that I have is a Wolff XP rifle length spring.
Now, I haven't shot it yet, but what's the thinking behind these heavier recoil springs, instead of standard springs, with rifle length gas systems? Any problems that I should look out for?
Just want to know if I should plan on needing a standard spring, or if this Wolff will be good.
I will be shooting it Tuesday.
Thanks guys