Thread: Muzzle forward vs overbarrel suppressors

Originally Posted by gimp

Overbarrel is louder than muzzle can for a can of the same weight. It's less volume efficient and the gas is flowing forwards not backwards. They can be shorter though (but probably louder). They prevent use of a Belleville washer or similar as a locking washer to prevent the suppressor coming loose. They can also "spring" the barrel if the bore is non-concentric to the OD of the barrel and they have a tight bushing. They also trap heat.

They're less likely to be damaged by a baffle strike if they come loose but the lack of ability to use a lock washer = more likely to come loose than a prudently installed muzzle can


All that said I've got a shiny new Roedale Delta Pro-X over barrel to try reduce OAL at cost of weight, supposedly same suppression

Thanks GIMP. What caliber are you putting that Pro-X on ? It's a bit more grunty than what I was looking at. Sounds like you've got an OK relationship going now with Roedale ? I guess you'll try it out with some of the end baffles removed and let us know how it goes ?

Very interesting, the Belleville washer. I see in wikipedia it might have some useful properties for a suppressor like return to battery under recoil and tolerance of thermal expansion. Is there a problem with rocking from side to side as ther woudn't be contact across the whole face ? Also, Bellevilles mostly seem to have a big difference between inner and outer diameter to get the spring action. Do they come in skinny rings like 16/14mm you might need on a muzzle thread or do you put them on fat side out and they bear on some wider surface of the suppressor ?