AB Prototype A-10 Threaded Barrel for SIG Sauer P320, 10mm, 5.7", no LCI, Black DLC, .578"-28
This is a new AB Prototype A-10 threaded barrel for the SIG Sauer P320 X-TEN in 10mm AUTO. This precision machined barrel is cut from 416 stainless steel and threaded .578"-28 (standard .45 thread). Tighter-than-factory tolerances, but still a direct replacement barrel for the SIG Sauer P320 X-10. Will work with the P320 X-TEN models in 10mm only or for a custom 10mm P320 build. Also works with aftermarket XTEN (X10) slides, AB Prototype and others. Will not work with X5, M17 or other 9mm/.40SW full-size (4.7" or 5.0") slides. Drop-in fit for reliability.
The .578"-28 thread is the standard thread for most .45ACP pistol accessories, i.e. suppressors, comps, thread protectors, etc. Our threaded barrels will allow compatibility with most 45 barrel accessories on the market.
Included with our threaded barrels is our thread protector comp. This muzzle device will add a bit of style and performance to your threaded pistol. Six flats make for easy installation. Manufactured in the USA from 1144 Cold Drawn Alloy Steel and Black Nitride (QPQ) coated for improved wear-resistance. Thru bore is .470".
Please note this barrel will not fit X5s and similar P320s in 9mm, .40 or .357SIG. DOES NOT FIT X-Ten COMP (this pistol is designed for a 3.8" barrel only!). THREADED BARRELS MAY NOT BE LEGAL IN ALL STATES. Please be aware of state laws before ordering/installing.
Includes: 1 AB Prototype A-10 5.7" Threaded Barrel (.578"-28), 10mm (NO LCI CUT), thread protector comp, Black. Factory grease may be present. No other parts are included. MADE IN USA.
Installation is available for an additional charge.
All AB Prototype manufactured products offer a limited 1-year warranty to the original purchaser covering defects in material or workmanship and only extend to replacement parts as originally provided and/or installed for the original purchaser. Warranty does not cover normal wear and tear or coatings. Any unauthorized work, installation, improper or unsafe handling or utilizing non-SAAMI, hand-loaded, reloaded and/or remanufactured ammunition will immediately void this warranty. No other warranties are given or implied.
DISCLAIMER: AB PROTOTYPE IS NOT AFFILIATED WITH SIG SAUER®. These barrels are not manufactured, endorsed or warrantied by SIG Sauer®.
You can find our 10mm slides here: A-10 10MM SLIDE
6 Reviews Hide Reviews Show Reviews
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Sig 10 mm Threaded barrel
You folks knocked it out of the park With this threaded barrel. The threads match up with your compensator perfectly and um, it went together.As smooth as glass. I look forward to I'm working with you. Folks, more, as your been product List grows.
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Great Xten Upgrade
Fit is excellent. After ~250rds the A-10 barrel does show more external finish wear than the factory barrel did at similar round counts. Not enough to be concerning. The thread protector likes to loosen up if only hand tightened onto barrel. Just slightly tightened with small wrench and the problem goes away. Just makes switching between protector/suppressor a little harder. Overall, awesome upgrade and well worth the money. ABPrototype are also great to deal with could not recommend this company more.
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A-10 Threaded Barrel P320 5.7 in, 40 Long (10mm)
Drop in, close tolerance fit, performs well, 500 rnds, no issues. Pleased with order and delivery. Will continue to buy from AB Precision.
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10 mm threaded barrel
Fits perfectly, looks great, cycles rounds without issue
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Outstanding barrel for the SIG P320 X-Ten...
Out of the few available aftermarket accessories and parts that are available for the SIG Sauer P320 X-Ten, this threaded barrel from AB Prototype is probably the very best. The finish, fit, and function are all perfect as I've experienced zero problems with this barrel after 400 rounds of various loads of 10mm ammo. The 578"×28 threads and shoulder flats are expertly machined to properly host all of my .45ACP comps & suppressors, and the bottom lugs, ramp, and overall length provide for a true drop-in fitment that requires no additional machining or mods. The thread protector comp and lack of an LCI are also greatly appreciated, as this barrel is highly recommended for anyone with a bare-bones X-Ten. MNY THX to AB P!
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Excellent suppressor host
I bought this specifically to use with a suppressor and I couldn't be happier. Not only does it qualify as an 'upgrade' barrel, but it also proves to be an excellent host for a suppressor.
