TacFire AR Barrel — 9mm NATO, 7.50" Black Nitride, 1:10" Twist, Threaded for AR Pistol Platform (Model: BAR9MM7 / UPC: 811261027381)
Upgrade your AR-pistol build or replace a worn barrel with the TacFire BAR9MM7 — a short, purpose-built 9mm NATO barrel engineered for compact AR-9 pistols and SBR-style projects. At 7.50 inches overall length with a 1:10" twist rate, corrosion-resistant black nitride finish, and standard 1/2×36 muzzle threading, this barrel balances maneuverability, durability, and accuracy in a lightweight, value-minded package. battlehawkarmory.com+1
Summary — Fast facts
Model: TacFire BAR9MM7
Caliber: 9mm NATO / 9x19mm Luger
Barrel Length: 7.50 inches (ideal for AR pistol platforms) Palmetto State Armory
Twist Rate: 1:10" (optimized for common 9mm projectile weights) OpticsPlanet
Muzzle Thread: 1/2×36 (accepts standard .30 cal muzzle devices and brakes/adapters) OpticsPlanet
Finish: Black Nitride for enhanced surface hardness, wear and corrosion resistance. Classic Firearms
Material: Heat-treated, stress-relieved high-grade barrel steel (common listings reference chrome-moly vanadium / 4150 or equivalent quality steel for TacFire pistol barrels). battlehawkarmory.com+1
Intended Use: AR-9 pistol builds, short-barrel rifle (SBR) projects, compact defensive or range platforms. TheGunZone
Why this barrel matters for your AR-9 pistol build
A barrel dictates how an AR platform handles, how accurately it shoots, and how it stands up to everyday use. The TacFire BAR9MM7 is purpose-made for compact 9mm AR pistols where low weight and short overall length are priorities. The 1:10" twist is a versatile rate that stabilizes the most common 9mm bullet weights used in competition and defensive loads, while the black nitride surface improves lubricity, resistance to corrosion, and ease of cleaning compared with bare steel. OpticsPlanet+1
Performance & ballistics — what to expect
Because this is a 7.5" barrel, you’ll get rapid handling and easier maneuvering in close quarters with the expected tradeoffs in muzzle velocity vs. full-length rifle barrels. For typical 9mm loads, expect reliable performance, fast follow-up shots, and tight grouping when the barrel is installed and headspaced on a properly configured AR-9 lower. The nitride finish helps shed residue and maintain consistent bore life even under heavy range use. TheGunZone+1
Construction & finish
TacFire uses high-quality, stress-relieved barrel steel and applies a black nitride (salt bath nitrocarburizing) finish to increase surface hardness, reduce friction, and resist corrosion — a practical choice for barrels that see frequent use and occasional exposure to elements. The barrel is threaded 1/2×36 at the muzzle so you can mount compensators, flash hiders, or adapter devices commonly used on compact 9mm ARs. battlehawkarmory.com+1
Fitment & compatibility
Platform: Designed for AR-pistol and AR-9 conversions (ensure your upper and lower are configured for 9mm bolt/collets and magazines). Palmetto State Armory
Thread pitch: 1/2×36 — common for .30 cal series muzzle devices (confirm your muzzle device spec before purchase). OpticsPlanet
Barrel extension / headspace: When swapping barrels, always confirm proper headspacing and use compatible barrel extensions or have a qualified armorer install the barrel to ensure reliable, safe operation.
Installation notes (high-level)
TacFire barrels are crafted to standard AR dimensions — installation is typically straightforward for those comfortable with basic armorer procedures. However, final fitment, torque specs, and headspace verification should be performed per manufacturer guidance or by a qualified gunsmith. Improper installation can result in function issues or unsafe operation. Cheaper Than Dirt
Maintenance & care
Cleaning: Use bore brushes and solvent appropriate for 9mm barrels; nitride finishes are durable but still benefit from regular cleaning to remove carbon and copper fouling.
Lubrication: The nitride surface provides improved lubricity, but hinges and moving parts should still be maintained per standard AR care routines.
Inspection: Periodically inspect threads and bore condition; if running suppressed or using high volumes, check for signs of stress or throat erosion.
Common Questions (FAQ)
Q: Is this barrel compatible with all AR lowers?
A: It’s intended for AR-9 pistols and lowers set up for 9mm bolts/magazine systems. Confirm your lower and bolt carrier group are built for 9mm before installing. Palmetto State Armory
Q: What muzzle devices fit the 1/2×36 threads?
A: Many compact muzzle brakes and flash hiders specify 1/2×36 — check the device’s thread spec to be sure. Adapters exist if you need a different pitch. OpticsPlanet
Q: Should I expect loss of velocity with a 7.5" barrel?
A: Yes — shorter barrels will show reduced muzzle velocity versus longer barrels. For most defensive or range loads in 9mm, the tradeoff is acceptable for the compactness and handling benefits. TheGunZone
Technical specifications (concise)
Manufacturer: TacFire
Model / SKU: BAR9MM7
UPC: 811261027381
Caliber: 9mm NATO / 9×19mm Luger
Barrel Length: 7.50 inches
Twist Rate: 1:10"
Muzzle Thread: 1/2×36
Finish: Black Nitride (salt bath nitrocarburized)
Material: Heat-treated barrel steel (commonly listed as 4150 chrome-moly vanadium or equivalent high-grade steel) battlehawkarmory.com+1
Intended Platform: AR-pistol / AR-9
SEO-Friendly Product Summary
The TacFire BAR9MM7 is a 7.50" 9mm NATO AR barrel featuring a 1:10" twist, black nitride finish, and 1/2×36 muzzle threading — purpose-built for AR-9 pistol builds and compact defensive platforms. Durable, easy to maintain, and optimized for common 9mm bullet weights, the BAR9MM7 offers an affordable, high-value upgrade for builders seeking a short, reliable 9mm barrel. UPC: 811261027381. OpticsPlanet+1
If you’d like, I can also provide a short checklist for compatibility (bolt type, magazine style, and upper/lower considerations) or draft a concise installation checklist for your armorer — tell me which you'd prefer and I’ll include it right away.
The End
