My Account (Sign in)
Your basket is empty.
0
Basket
contact us by phone Help and contact
Free standard delivery over £199
100-day return policy
My Account (Sign in)
Shopping list
Your basket is empty. (0)
Basket
Newsletter Newsletter
Sale

Over 300,000 customers - we say thank you!

4.93/5 "Very good" (1400+ reviews)

40,000+ products for hunting and shooting sports

Home Handgun Parts Barrel Parts Barrels APEX TACTICAL SPECIALTIES INC SEMI DROP-IN THREADED BARREL FOR S&W M&P Support
Enhance your S&W M&P accuracy with the Apex Drop-In Threaded Barrel. ✨ Available in 4.25" and 5.00" lengths for precision shooting.

APEX TACTICAL SPECIALTIES INC SEMI DROP-IN THREADED BARREL FOR S&W M&P - APEX TACTICAL SPECIALTIES INC SEMI DROP-IN THREADED BARREL FOR S&W M&P 4.25"

856008005987 100023282

Variations:

Enhance your S&W M&P accuracy with the Apex Drop-In Threaded Barrel. ✨ Available in 4.25" and 5.00" lengths for precision shooting.
APEX TACTICAL SPECIALTIES INC SEMI DROP-IN THREADED BARREL FOR S&W M&P 4.25"
309.9 GBP 0 £309.90 *
Reordered - Is a 'Call to order' product.
Barrel Length: 4.25''
Reordered - Is a 'Call to order' product.
309.9 GBP 0 £309.90 *
Ask question
Upgrade your S&W M&P with the Apex Drop-In Threaded Barrel for precision shooting! ✨ Achieve tight groupings and enhanced performance.
APEX TACTICAL SPECIALTIES INC SEMI DROP-IN THREADED BARREL FOR S&W M&P 5"
334.9 GBP 0 £334.90 *
Reordered - Is a 'Call to order' product.
Barrel Length: 5''
Reordered - Is a 'Call to order' product.
334.9 GBP 0 £334.90 *
Ask question
309.9 334.9 2 GBP
309.9 GBP 0 £309.90

Prices inclusive of duty & VAT.

Product no.: 100023282

Mfr. No.: 105061

856008005987 The Apex Grade Semi Drop-In Threaded Barrel for the Smith & Wesson M&P is available in either a 5.00” or 4.25” option. 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 using a mechanical rest. Final results may vary based on shooter ability, ammunition selection and variations in factory firearm tolerances. Barrel is threaded for ½-28”, and includes a thread protector. Works with all Smith & Wesson 9mm M&P pistols requiring a 5.00” or 4.25” barrel.
Reordered - Is a 'Call to order' product.
1

Backordered, delivery time approx. 4-12 weeks from the USA warehouse.

Is a 'Call to order' product.

Backordered, delivery time approx. 4-12 weeks from the USA warehouse.

Wish List Ask question
Requires order by phone

Variations:

Enhance your S&W M&P accuracy with the Apex Drop-In Threaded Barrel. ✨ Available in 4.25" and 5.00" lengths for precision shooting.
APEX TACTICAL SPECIALTIES INC SEMI DROP-IN THREADED BARREL FOR S&W M&P 4.25"
309.9 GBP 0 £309.90 *
Reordered - Is a 'Call to order' product.
Barrel Length: 4.25''
Reordered - Is a 'Call to order' product.
309.9 GBP 0 £309.90 *
Ask question
Upgrade your S&W M&P with the Apex Drop-In Threaded Barrel for precision shooting! ✨ Achieve tight groupings and enhanced performance.
APEX TACTICAL SPECIALTIES INC SEMI DROP-IN THREADED BARREL FOR S&W M&P 5"
334.9 GBP 0 £334.90 *
Reordered - Is a 'Call to order' product.
Barrel Length: 5''
Reordered - Is a 'Call to order' product.
334.9 GBP 0 £334.90 *
Ask question

Description:

The Apex Grade Semi Drop-In Threaded Barrel for the Smith & Wesson M&P is available in either a 5.00” or 4.25” option. 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 using a mechanical rest. Final results may vary based on shooter ability, ammunition selection and variations in factory firearm tolerances. Barrel is threaded for ½-28”, and includes a thread protector. Works with all Smith & Wesson 9mm M&P pistols requiring a 5.00” or 4.25” barrel.

Restrictions

  • Is a 'Call to order' product.

Top takeaways

  1. The Apex Grade Semi Drop-In Threaded Barrel is designed for Smith & Wesson M&P pistols, available in 4.25” and 5.00” lengths, and made from stainless steel.
  2. This barrel features a 1:10” twist rate, can achieve 1-1/2 inch groupings at 25 yards, and is threaded for ½-28” with a thread protector included.
  3. Compatibility is with all Smith & Wesson 9mm M&P pistols that require a 5.00” or 4.25” barrel, enhancing accuracy performance.

Attributes

  • Barrel Length: 4.25''
  • Cartridge: 9 mm Luger
  • Finish: Stainless Steel
  • Make: Smith & Wesson
  • Model: M&P
  • Style: Drop-In,Threaded
  • Delivery weight: 0.136kg
  • Shipping height: 38mm
  • Shipping width: 46mm
  • Shipping length: 193mm
  • UPC : 856008005987

Item details

Made in USA
US export classification: 0A501.c

Customers reviews

Customer ratings (1)

5 / 5
Definitely recommended

Brownells USA Best Barrel For M&P 02/01/2018

I bought this for my M&P 9L Core to attach a suppressor.I ordered the correct file and lay out fluid. I watched the video from Apex. Step by step install was very easy. For my gun the only metal filing was for the lock up on the rear tabs. Watching video and measuring against factory barrel I got the exact fit Randy Lee describes in his instructions. WHAT A DIFFERENCE! This pistol went from 4-6” groups at 20 yds to 2-3”. Very consistent round groups with no uncalled flyers. Worth every penny.

Site Navigation
Product Categories
Ordering
Customer Service

Welcome!

to Brownells UK, your destination for anything gun related. With our roots in a genuine passion for firearms, we bring you an unmatched selection of Gun Parts, Firearm Accessories, Gunsmithing Tools, Scopes & Red Dot Sights and Expert Knowledge.

Whether you're looking to maintain, repair, or upgrade, we've got what you need!

For Shooters, By Shooters
We share your enthusiasm and know exactly what you're looking for because we're part of the community.

Massive Selection
From the essentials to the unique, find everything under one roof.

Our blend of tradition and innovation
Shop with the convenience of modern technology, backed by a legacy of experience.

Browse our collection and discover why we're the trusted name in shooting sports & hunting.

Brownells Norge - Komplett utvalg av ladeutstyr, våpendeler, kuler, hylser, kikkerter, optikk og luftvåpen Brownells Österreich - Einer der größten Lieferanten für Waffenteile, Büchsenmacherzubehör & Schießsportzubehör Brownells Switzerland - Einer der größten Lieferanten für Waffenteile, Büchsenmacherzubehör & Schießsportzubehör Brownells Deutschland - Einer der größten Lieferanten für Waffenteile, Büchsenmacherzubehör & Schießsportzubehör Brownells France - Le plus grand fournisseur d'Accessoires pour le tir, Pièces détachées & Outils d'Armurier Brownells Iberica - El mayor proveedor de accesorios para el Tiro, Piezas y herramientas del armero. Brownells Sverige - Världens största leverantör av Vapendelar, Vapensmide Verktyg & Skyttetillbehör Brownells Suomi Brownells Italia - Il negozio del più grande rivenditore di componenti e accessori per armi da tiro, difesa e caccia Brownells Polska - Największy na świecie dostawca części broni, narzędzi rusznikarskich & akcesoriów strzeleckich Brownells Česko - Největší světový dodavatel součástí zbraní, střeleckého příslušenství a zbrojního nářadí
*
Prices inclusive of duty & VAT.

© 2025 Brownells UK
Part of the Brownells Europe Group

Logo Brownells
Classical viewClassical view Mobile viewMobile view
Back to top