Originally Posted by borpa11

The jacketed comp has holes projecting up and which go out the comp and the shroud.

The lead comp does not have these and is extended with two addition side ports.

If you use the jacketed comp port shooting lead and lead accumulates in the top ports it makes extracting the comp extremely difficult and occasionally next to impossible.

Some find the lead comp reduces muzzle flip better than the jacketed comp.

Be safe
Ruggy