Upgrade your Sig PE57 with our premium US-made 24″ 7.5×55 Swiss barrel. Crafted from 4140 hammer-forged steel, this barrel replicates the original’s precision, featuring correct chamber fluting and a stepped chamber for reliable brass extraction. We use a custom mandrel for a precise 7.5 bore, slightly smaller than .30 caliber, and maintain the original 1/12 rifling. Finished with a durable black nitride coating, this barrel ensures peak performance and authentic function.
See pic of fired brass to see what the step in the chamber does.