I found something interesting and I thought I would share. I have 3 RIAs in the following forms: M1911A1 GI, M1911A1 loaded and M1911A2. The guns all function well with a Ciener 1911-22 conversion kit, but not with the Sig 1911-22 conversion kit. Interestingly, my Colt 1991A1 and S&W 1911 will function with either version of the conversion kits. As for the RIA, the Sig 1911-22 Recoil Spring Guide Rod will not fit into the frame notch. Maybe more interesting is the fact that the Colt 1991A1 and RIA M1911A1 (both of which I thought were GI milspec) have very different sizes when it comes to the recoil spring guide rod notch.
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