Prometheus EG Stainless Steel 6.03mm Inner Barrel (141mm - 550mm) MSR-011 -Slide releases

-Slide releases

Multilayer Coatings

FULL ALUMINUM CONSTRUCTION

Unlike other flat type nubs

safe on plastics

Prometheus EG Stainless Steel 6.03mm Inner Barrel (141mm - 550mm) MSR-011 -Slide releasesPrometheus is a high end brand manufacturer of aftermarket parts with a special focus on enhanced performance. Their inner barrels are well established as being a top tier choice for tight bore inner barrels. With an inner diameter of 6. 03mm, it is a tighter fit on ammo then most stock varieties (which are in the 6. 05+ range mostly) but still not as tight as 02 or 01 barrels making them easier to work with. 6. 03mm is generally considered the sweet