SIG SAUER X Compact/Subcompact 9mm Threaded Barrel No LCI 4.3in Black. 6in long. SIG SAUER factory replacement pistol barrels are specially heat-treated for toughness and durability. Chambered in 9mm this threaded barrel is meant to fit with P320 XCOMPACT & Sub-Compact models. Barrels can be replaced easily and conveniently by simply ensuring the firearm is unloaded removing the slide from the receiver and grip module and sliding out the existing barrel. Compatibility: This barrel is designed for sub-compact or XCOMPACT P320 variants that do NOT have the loaded chamber indicator. Specifications for SIG SAUER P320 X Compact/Subcompact 9mm Threaded Barrel No LCI 4.3in: Manufacturer: SIG SAUER Color: Black Barrel Length: 4.3 in Threads per Inch: 1/2x28 Caliber: 9mm Luger Gun Make: SIG Sauer Gun Model: SIG Sauer P320 SIG Sauer P250 Included Accessories: Standard Package Contents: SIG SAUER P320 X Compact/Subcompact 9mm Threaded Barrel No LCI 4.3in SIG SAUER Infinite Guarantee What firearm models does the manufacturer say SIG SAUER P320 X Compact/Subcompact 9mm Threaded Barrel No LCI 4.3in is compatible with? The manufacturer suggests that SIG SAUER P320 X Compact/Subcompact 9mm Threaded Barrel No LCI 4.3in is compatible with SIG Sauer P250 SIG Sauer P320SIG SAUER 8900445: X Compact/Subcompact 9mm Threaded Barrel No LCI 4.3in Black