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5″ 300 BLACKOUT MICRO PISTOL MED PROFILE 1 5 RH TWIST M4 BARREL EXTENSION 4150 CrMoV BLACK NITRIDE FINISH – 300MP5MED50B5

Original price was: $99.99.Current price is: $29.99.

Weight 12 oz Dimensions 7 × 3 × 3 in Finish

Nitride / Melonite

Barrel Profile

Micro

Cartridge Compatibility

300 BLK

Gas Block Journal

0.75

Barrel Length

5

Gas System Length

Micro

Platform

AR-15

Twist Rate

1:5

Muzzle Thread Pattern

5/8×24

MPN 300MP5MED50B5 UPC 28742

Description

Discover the ultimate compact powerhouse for your AR-15 build with the 5 300 Blackout Micro Pistol Barrel. Engineered for precision and reliability in close-quarters scenarios, this barrel delivers exceptional performance with subsonic and supersonic ammunition, making it ideal for tactical pistols and suppressed setups. Crafted from premium 4150 CrMoV steel with a durable black nitride finish, it ensures longevity and corrosion resistance while optimizing velocity and accuracy in a ultra-short profile.

Key Features

Ultra-Compact Design: At just 5 inches, this micro pistol barrel provides maximum maneuverability without sacrificing the punch of .300 Blackout rounds, perfect for home defense or concealed carry builds.

Optimized Twist Rate: 1:5 RH twist stabilizes heavier subsonic projectiles, enhancing accuracy and terminal ballistics for suppressed shooting.

Advanced Material and Finish: Button-rifled 4150 CrMoV construction with black nitride (Melonite) coating reduces friction, improves heat dissipation, and extends barrel life under high-round counts.

M4 Barrel Extension: Ensures seamless compatibility with standard AR-15 lowers and bolt carrier groups for a drop-in upgrade.

Micro Gas System: Paired with a 0.75 gas block journal, it balances reliable cycling with minimal recoil, ideal for lightweight pistol configurations.

Specifications

Caliber: .300 Blackout (300 BLK)

Barrel Length: 5 inches

Profile: Medium/Micro

Twist Rate: 1:5 RH

Gas System: Micro

Muzzle Threads: 5/8×24

Finish: Black Nitride

Platform: AR-15

Material: 4150 CrMoV Steel

Why Choose This Product?

This barrel addresses common challenges in short-barreled AR-15 pistol builds, such as gas system reliability and projectile stabilization. The fast 1:5 twist excels with 190-220 grain subsonic loads, minimizing over-stabilization issues seen in slower twists, while the nitride finish combats wear from rapid fire. Whether youre customizing a PDW for tactical use or seeking a versatile suppressor host, this barrel enhances your setups accuracy and dependability, ensuring confidence in every shot. Its compact dimensions (7 L x 3 W x 3 H) make it easy to handle during assembly, solving the pain point of bulky components in tight builds.

Elevate your .300 Blackout pistol todaysecure this high-performance barrel and experience the difference in precision and control. Perfect for enthusiasts demanding quality without compromise.

Frequently Asked Questions

Q: Is this barrel compatible with standard AR-15 parts?
A: Yes, it features an M4 barrel extension and is designed for the AR-15 platform, ensuring easy integration with most mil-spec components.

Q: Why a 1:5 twist rate?
A: The 1:5 twist is optimized for .300 Blackout subsonic ammunition, providing superior stabilization for heavier bullets commonly used in suppressed applications.

Q: Does the black nitride finish affect performance?
A: Absolutelyit enhances durability, reduces fouling, and improves accuracy by minimizing barrel wear and maintaining consistent rifling.

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