*The discussion of the creation, fabrication, or modification of airgun moderators is prohibited. The discussion of any "adapters" used to convert an airgun moderator to a firearm silencer will result in immediate termination of the account.*
Any benefit to purchasing one for a 600MM Impact M3 or just for aesthetics. I have one for a 700MM slug gun. But don’t know if it would even help a 600MM.
I put one on a 700 just for fun. It did tighten up my slug groups a tiny bit but actually made the rifle a little louder. I know you said 600 mm barrel but I'm betting results will vary.