The biggest issue with assembling an AR isn't so much getting the parts together right - it's getting the right parts together.
US Army 1966-69, VFW Life Member, Retired Geek
I own a P 220 and a P 226, and I couldn't be happier. One of these pistols is with me at all times and if I ever have the need to draw, I know they will do the job, as I have never had a weapon failure with either of them. I don't want to sound like a commercial, but I trust them with my life.
I own a Sig 239 .40 Looove it ! It's my favorite carry gun .Also have a Sig 229 .357 sig love it as well both very accurate never any issuses with either .On the other hand I owned a Sig 250 first generation ( Trigger SUCKS ) sold it didnt like it . I wont buy another poly gun from Sig .