just got around to the final assembly of that GWAC--cav arms polymer lower that i got on the group buy from mad months ago.
as most know i have had a cav-arms polymer a1 style lower since about 06. it has seen some hard use around the farm as truck/atv/horseback/loaner--and as a test bed for caliber conversions. it has been used with 7.62x39, 5.45, 6.5, 6.8spc and the like.
the cav has been pretty tough the only problems i have found with it over the years is that certain mags wouldn't drop free , the rear compartment sometimes would fly open, the pins exit on the wrong side and are a PITA to keep up with. and the biggie --it uses a CAR style buffer and spring, now i found this a bit limiting as i like to run the big rifle buffer set up with the more "bump" rounds --though this can be worked around.
i do find the loss of 1Lb a good thing on some of my heavy barreled uppers.
the new GWAC is pretty much the same lower with a few subtle improvements , they did away with the stowage compartment in the butt-stock, the mag well fit is improved and i have yet to find a mag that don't fall free empty. the pin set up is the same though the pins do seem to fit tighter than in the old cav lower. of course this could be from just years of abuse on the cav.
i bought one of them $29 P=tac LPKs from PSA to finish up the GWAC --all i can say is it went together super easy. i would have to say this was the quickest assembly i have ever done, i suppose not having those little fiddely flea-pin things that stop the front pin really speeds things up.
another big plus is it seems to have a very good stock trigger. it feels as good as some of my 15min mod triggers except i haven't modded anything.
now the last P-tac trigger set i got was a bit gritty and hard. but after a bunch of polishing, spring bending and so on got it up to "OK" levels of pull and feel.
now this trigger/FCG --feels very good out of the box, as good as the other one AFTER all the work.
don't know if i got lucky and just got a good FCG for a change or that this GWAC has more precise pin locations for the FCG --but the end result is a very smooth stock trigger set up.
normally you can give me a plastic lower --but these GWAC/cavs have some advantages.