captmike Posted November 19, 2023 Share Posted November 19, 2023 (edited) I’ve watched a lot of videos comparing the M2 to the M4, so Ive learned about the differences, but can’t figure out my specific question. I have a SBE 1 from 1999. I want to get a tactical SG and prefer to stick with Benelli. I have acquired several spare parts such as bolt rebuild kits and recoil springs for my SBE. And I have put a light rail/ sling mount ring from GG&G that I would like to transfer over to my dedicated tactical SG. Which of the two tactical models, M2 or M4, is most compatible with my SBE? I’d guess and say the M2 is because it is inertia driven like my SBE. The M4 is a gas operated system. So I’m leaning towards getting an M2 for compatibility and I already know how to disassemble, clean and work on it. The M2 has a nicer price point as well. What am I missing. Is the M4 just as compatible, if not more, with my SBE? Thanks Edited November 19, 2023 by captmike Quote Link to comment Share on other sites More sharing options...
Sukhoi_fan Posted November 20, 2023 Share Posted November 20, 2023 A inquiry like that is best made by going to the source, suggest you contact Benelli for the most accurate info. 1 Quote Link to comment Share on other sites More sharing options...
captmike Posted November 22, 2023 Author Share Posted November 22, 2023 Thanks, I did exactly that. The M2 is more compatible as far as internal parts. Springs and detents and whatnot, just as I expected. Quote Link to comment Share on other sites More sharing options...
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