Thanks!!! I just installed the Mako IDF pistol grip and the enidine buffer so tomorrow she's gonna get worked ;-) also I didn't notice prior but the sig comes with a flat buffer spring! And I haven't even fired it with the pws fsc30 so now I should see quite the difference on the sight picture on a follow up. My aimpoint will be here next week along with the laser designator. Jeeze Louise im excited lol. I've never built a cqb type weapon although with my gg&g xds heavy duty bipod I bought for my savage model 10 precision carbine im sure with a adequate optic I can be more accurate with this then the bolt gun beauty.