HK USP .40 Full Size To .357 Sig Conversion Barrel.Each barrel is finely and painstakingly made from ordnance grade steel, heat treated and finished inside and out in the ultra-desirable nitride finish. This is the finest replacement barrel available for the HK USP full size .40 pistol. The perfect barrel to use as a spare or for replacement parts. Each USP .40 to .357 Sig barrel is a drop in replacement for your HK USP .40 Cal full size or USP .40 Tactical pistol.Fits the USP .40 full size models:
- Traditional button rifled bore for use with jacketed and non-jacketed ammunition
- 4140 stress relieved & properly heat treated steel
- Micro polished feed ramp
- Machined to exact tolerances for proper fitment
- Overall length 4.20"
- Finished inside and out in the "Nitride" process for enhanced service life
- 100% made in the U.S.A
- Not for use in the USP Compact models