Convert Your Glock™ 23 from .40 CAL to 9 mm with a Match-grade Conversion Barrel from F.J. Feddersen
These conversion barrels are designed to change the caliber of your Glock™ 23 to 9 mm. New magazines may be required.The Glock™ 23 has been a favorite of law enforcement, and civilians alike since it was introduced in 1990. This mid-size .40 CAL pistol is already pretty good, but F.J. Feddersen can make your Glock™ 23 more accurate with a match grade precision-manufactured gun barrel. Our drop-in replacement barrel is the instant upgrade you have been looking for. No tooling or retrofitting required. Available in matte or polished stainless steel. A threaded barrel option that connects silencers is also available.