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Armory Craft - Sig Sauer P320 X-Five & X5 Legion 5.7" BULL Barrel - 1/2x28 - Threaded & Non-Threaded. Will also work with the Max Michel P320.


Not for X-CARRY Legion, which uses a regular (non-bull) P320 Compact threaded barrel. Only for Sig X-Five/X-Five Legion, not for other regular non-X5 P320 models or AXG models. You can purchase Armory Craft Threaded Barrels for Legion X-Carry, 320 Compatc/Carry and AXG guns with Compact/Carry size slides HERE.


Important - Please Read All Details Below:

  •  Sorry, NO COUPONS can be used for this the barrel
  • No International Shipping


- Please note that this barrel does NOT have an LCI (loaded chamber indicator), which is actually the preferred version when shooting a firearm with an optic.


  • This is a 'drop-in' barrel. Fitting is not required.
  • Matches or exceeds the fit of SIG factory X5 barrels
  • This is a thicker (16mm) bull barrel which comes only with X5 pistols, that is necked-down to 14mm once it leaves the slide. This 14mm is the same thickness as 'regular P320 threaded barrels'. This will ensure compatibility with any silencers, Armory Craft compensators and the vast majority of other P320 compensators currently on the market.
  • The Sig Sauer P320 X5 / X5 Legion was primarily designed as a competition pistol that features a heavier bull barrel, as well as a longer and heavier slide. Therefore, this barrel was designed predominantly for use with a compensator.

    P320 X5 which comes with a heavy Bull Barrel, was designed for competition use. While we have successfully tested this barrel with some 'short / light' suppressors, these barrels are NOT intended to be used (while they may work) with most medium / full-sized suppressors. Our P320 X5 Bull barrels are specifically designed to be used with compensators. Please note that when using any threaded barrel with a compensator or a suppressor, recoil action will ALWAYS need to be tuned with a more powerful ammo and / or a lighter recoil spring.

    You can purchase a lighter, 11lb recoil spring from the drop-down menu. If you have the older (non-Legion) X5, you can purchase a full recoil tuning kit HERE.


  • CNC machined out of a solid billet of 416R Stainless Steel. 416R is a hardened chromium stainless steel particularly suited for use in high quality precision barrels. This grade has good machinability and, because of closely controlled chemistry and processing techniques, may be machined and lapped to a high finish, which is important for bore accuracy.
  • Thread Protector is Included
  • Length: 5.7"
  • Material is Hardened Stainless steel in Matte finish (Stainless finish or Titanium Nitride/Gold finish over Stainless Steel)
  • Manufactured for Armory Craft by a well known US OEM barrel manufacturer in a facility which is certified to ISO 9001/AS9100 & in accordance with the requirements of AS9104A. 


Please don't forget to check out our factory threaded barrels for other Sig Sauer pistols, such as the P226, P229/P228P320 Full-Size and P365/P365XL


We also offer compensators for the P226/P229, P320/X5 and P365/P365XL 

Armory Craft - Sig P320 X-Five & X5 Legion BULL Barrel - Threaded & Non-Threaded

$249.95 Regular Price
$219.95Sale Price