Yes, i removed .01"off the BHO side and .005" off other side / polished and magically parts went right in. I will post pic's as I learn how to use site. Thanks I bought this my first saiga and have stripped it down. Ordered every part I could from R and R and CSS that appeared to enhanced rifle. Am looking forward to a fun and fulfilling build. Any warnings tips or tricks appreciated. This is only my 4th build: bulgy milled ak, Noveske 18"AR, and Ruger 10/22, Thanks for the help, new gun new things to learn. Appreciate the response