The only reason I'm not looking at another SLR is I want a different look. I really dig the mk8 and the mrex I also like that they bolt to the barrel nut, or have a very secure mounting system. I also like the Griffin Armament low pro rigid rail. All the really good rails are expensive though the MREX isn't to bad. I like a longer rail since I have longer arms and typically c clamp. The geissele at 9.5 is half inch shorter than I really want. The MREX is 11 inch which is perfect the Griffin is 10.5 which will work. I'm torn on a muzzle device. Concussion doesn't bother me (everyone else hates my jcomp ALOT) Been looking at various linear compensators and some standard comps and I'm not 100% sure yet. https://www.cbcindustries.com/products/hera-arms-cc-competition-compensator-5-56-223 I like that and feel like it wouldn't be to bad. I forgot it needs a brace too. I like the tailhook mod2 for that.