So I am looking at building my last AR15/M4 style firearm. Despite 16 years of experience with the traditional lower platform I've decided to give an ambi lower a try for this build (I am left eye dominate).
I am split between the cartoony ARFCOM lower (hate that logo/website engraving, but love the layout) and the AXTS AX556.
They both come out to roughly the same price once you add the BADASS and Norgon Ambi to the ARFCOM. However, the AX556 uses a proprietary anti-rotation hammer pin and that has me a bit concerned as I use Geissele FCG's and I know that a G FCG isn't to be used with KNS Anti-Rotation Pins (Primarly due to hardness, and secondarily due to size spec's) and I am wondering if that carries over to the AX556 pin.
The AX556 pin:
"This precision heat-treated (case 58-60 Rc) hammer pin allows the use of all aftermarket triggers and helps to eliminate creep."
Any experience with the G/AX556 combo? Any thoughts on using anything but Geissele pins?


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