So I Have a G21c (factory compensated but really more ported) that I purchased a KKM 10mm conversion Barrel for. My question is with guide rod spring weight (currently stock .45 spring at 17lbs) should I plan to use 20lb, 22lb, 24lb, with a steel guide rod? Does the brand of guide rod matter? Would a recoil buffer be beneficial/necessary? Any help would be appreciated from those who have done this before.
thanks
thanks