--- title: "APEX TACTICAL Apex Semi Drop-In 40/9 Conversion Barrel M&P 5\"" canonical_url: "https://www.kygunco.com/product/apex-tactical-105-056-apex-semi-drop-in-40-9-conversion-barrel-mp-5" meta: author: KYGUNCO "og:image": "https://cdn.kygunco.com/assets/products/131630/thumbnail.jpg?v=1713445346" "og:image:height": "500" "og:image:width": "500" "og:title": "APEX TACTICAL Apex Semi Drop-In 40/9 Conversion Barrel M&P 5\"" --- > Index of every page on this site: [llms.txt](https://www.kygunco.com/llms.txt) [Home](https://www.kygunco.com/) / [Shooting](https://www.kygunco.com/category/shooting) / [Gun Parts](https://www.kygunco.com/category/shooting/gun-parts) / [Handgun & Rifle Parts](https://www.kygunco.com/category/shooting/gun-parts/handgun-and-rifle-parts) / [Handgun Parts](https://www.kygunco.com/category/shooting/gun-parts/handgun-and-rifle-parts/handgun-parts) / [Handgun Barrels](https://www.kygunco.com/category/shooting/gun-parts/handgun-and-rifle-parts/handgun-parts/handgun-barrels) / PXT-105-056 ![Main product image](https://static.kygunco.com/cdn-cgi/image/f=auto,w=600/assets/products/131630/main.jpg?v=1713445346) For illustration purposes only, this image may not be an exact representation of the product. # APEX TACTICAL Apex Semi Drop-In 40/9 Conversion Barrel M&P 5" $189.95 ** 5 interest-free payments of **$37.99** with ![Sezzle logo](https://www.kygunco.com/brands/sezzle.svg) ** Online In Store ** Flat Rate $13.94 for every 25 lbs. Shipping to HI & AK may incur additional fees. ** Ships To Your Home Handled by our expert shippers in Bardstown, KY. Item # 131630 Style PXT-105-056 UPC 856008005932 Condition New Manufacturer [Apex Tactical](https://www.kygunco.com/brand/apex-tactical) Weight 3 lb ### [Apex Grade Semi Drop-In 40/9 Conversion Barrel M&P - 5.00”](https://store.apextactical.com/WebDirect/Products/Details/192466) The Mk 1 Apex Grade Semi Drop-In 40/9 Conversion Barrel Barrel is designed for the .40S&W Smith & Wesson M&P. Due to the tolerance variations in the M&P Slide, the barrel is semi drop-in. In some cases this means the barrel may drop-in without alteration, but in most cases will likely require minor fitting which is easily done by the end user. The stainless steel barrel features a 1:10” twist rate. The design increases accuracy performance making the M&P capable of shooting as small as a 1-1/2 inch grouping at 25 yards. Accuracy test results based on use of a mechanical rest. Final results may vary based on shooter ability, ammunition selection and variations in factory firearm tolerances. – Direct replacement of factory 5.00" barrel – Converts .40S&W pistol to 9mm – Improves accuracy – Optimal performance seen with bullet weights of 115gr. through 147gr. using 9mm jacketed ammunition – Due to variations in factory slide tolerances, slight fitting may be required and is easily performed by the end user – NOTE: As with all conversion barrels, shooter may experience erratic ejection patterns due to light or low velocity rounds Works with all Smith & Wesson .40S&W M&P pistols, including the M&P M2.0, requiring a 5.00” barrel. ** WARNING: This product contains chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, go to [www.p65warnings.ca.gov](https://www.p65warnings.ca.gov). ## Watch The Product In Action 0.0 ** ** ** ** ** 0 reviews ** ** ** ** ** 0 ** ** ** ** ** 0 ** ** ** ** ** 0 ** ** ** ** ** 0 ** ** ** ** ** 0 ## More from Apex Tactical ```json {"@context":"https://schema.org","@graph":[{"@id":"https://www.kygunco.com/#website","@type":"WebSite","description":"Shop KYGUNCO for firearms, ammo, accessories, parts, and outdoor gear at low prices with fast, easy nationwide shipping.","name":"KYGUNCO","url":"https://www.kygunco.com/","publisher":{"@id":"https://www.kygunco.com/#/schema/organization/kygunco"}},{"@id":"https://www.kygunco.com/product/apex-tactical-105-056-apex-semi-drop-in-40-9-conversion-barrel-mp-5#webpage","@type":"WebPage","description":"Shop KYGUNCO for firearms, ammo, accessories, parts, and outdoor gear at low prices with fast, easy nationwide shipping.","name":"APEX TACTICAL Apex Semi Drop-In 40/9 Conversion Barrel M&P 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