Looks like we share an affection for the same hardware. I own a H&K USP compact .40 and a Colt AR-15 sporter/match H-bar thats tricked out for service rifle match shooting(CMP). It looks stock but it has a Kreiger float tube, Armalite two stage trigger, Armalite 1/4 moa match sites, oversize pins & an accuwedge to tighten it up. I also have 3.5lbs of lead added to the stock & more lead glued to the foat tube. She weighs in a hair under 13 lbs. and is rock steady from offhand shooting under 1MOA from prone. I also used to have an original H&R M-14. G.I. barrel & stock but shot just as good as my AR, I wish I never sold it *sigh*.