LWD Barrel M/22&31 Conversion to 9mm Stock Length

(3 reviews)

Current Stock:

Out of stock

Out of Stock
Length 4.49 inch, 114 mm

Lone Wolf 9mm conversion barrels allow you to shoot 9mm ammunition from your 40 S&W or 357 Sig pistol. These conversion barrels are easy to use and install the same as any other barrel, simply drop it in, no gunsmithing or other modifications are required. We do recommend you use the correct 9mm magazine with these conversion barrels to guarantee reliable feeding. Use G17 9mm mag for G22, G31 and G35 conversion. 

Lone Wolf replacement barrels are manufactured from the highest grade mill select 416 stainless steel. CNC machined and heat treated, providing a life time of service and unparalleled accuracy at an affordable price. The standard groove and land rifling make this an excellent choice for those who wish to shoot lead, plated or jacketed bullets. Can be used in factory ported or stock pistols. Intended for use in the Glock 22,31 pistol only. 

Using this barrel in a Generation 4 Glock may cause malfunctions while using the standard Glock recoil spring assembly. For best results, install a 9mm Glock recoil spring found here: Glock OEM Recoil Assembly, or for even more versatility, use our Gen4 guide rod adapter with our Gen3 guide rods found here: Lone Wolf Adaptors and Guide Rods.

Special features include:

  • Ready to use, pre-fit drop in. No gunsmithing required
  • Fits Glock Gen3 and Gen4
  • Precision machined from heat treated 416 stainless steel
  • Lock-up area produces greater shot-to-shot accuracy
  • Tighter dimensions than the original
  • Glass bead, satin finish exterior
  • Maximum chamber support, improved feed ramp design
  • Button rifled, standard crown
  • Ok to use lead, plated or jacketed bullets
  • Proudly made in the USA

For best results use magazines intended for Glock 17's, such as GLO-MF91317

Lone Wolf will replace any of our barrels or barrel accessories which are found to have manufacturing or material defects. Customer modifications or the use of reloaded ammunition will void this warranty.

(3 reviews) Write a Review
  • 5
    9mm Conversion Barrel

    Posted by Bodhi’s Dad on 30th Mar 2023

    Bought this for my G22 40 cal. Out of the box it fit my 22 as if it was made for it! Took it to the range and it shot exceptionally well. Very good accuracy. Great price! Definitely recommend!

  • 5
    LWD Barrel M/22&31 conversion to 9mm stock length

    Posted by Curtis Jones on 12th Mar 2023

    I converted my Glock from 357 to 9mm by using this barrel and a spring recommended for it. I also ordered three Glock 9mm 17 round magazines for it. The parts came in about five days and I dropped them in and they work perfectly. I put several rounds through it with no misfires or problems. I also recommended that my brother do the same thing on his Gen 3 357 Sig, and he is very satisfied.

  • 5

    Posted by Patrick Lynch on 26th Feb 2023

    I bought this drop in when I was taking my G22 to an Army course circa 2014, put a metric s*** ton of rounds through it then and since. It's probably well past it's life span but is still rockin' like it did day one. I'm going to upgrade to the Alpha Wolf, but will always "cherish" my time with this one!

Barrel Length:
4.49in (114mm)