Diamondback Firearms .308 Winchester Barrel — 16", 1:10 Twist, Black Nitride, Mid-Length Gas, Threaded 5/8x24 | Fits AR-10 Pattern Rifles | Model 308M16L50B10R (UPC: 815875019107)
Build a compact, hard-hitting .30-cal AR with the Diamondback Firearms .308 Winchester 16" Barrel. Engineered for durability and accuracy in a versatile package, this barrel pairs a 1:10 twist with a mid-length gas system to deliver smooth cycling and dependable precision across popular .308 loads. The black nitride (QPQ) treatment inside and out boosts wear resistance, corrosion protection, and cleaning ease—perfect for high-round-count training, hunting, or a general-purpose .308 carbine.
Why Choose This Diamondback .308 16" Barrel?
Balanced length for do-it-all builds: At 16 inches, you get practical velocity for hunting and steel with the maneuverability desired in a modern AR-10 carbine.
1:10 twist for bullet flexibility: Stabilizes a broad range of .308 Win projectiles—from ~150gr hunting soft points to 175–178gr match favorites.
Mid-length gas = smoother recoil: The mid-length gas system helps moderate impulse and parts wear while supporting reliable lock-back.
Black Nitride (QPQ) finish: Hardens the surface, resists rust, and reduces fouling for quicker cleanup and consistent accuracy over time.
Threaded 5/8x24: Ready for your preferred muzzle brake, comp, flash hider, or suppressor mount (where lawful).
AR-10/LR-308 compatibility: Designed to fit large-frame AR rifles chambered in .308 Winchester (verify receiver/BCG pattern and headspace).
Key Features at a Glance
Caliber: .308 Winchester
Barrel Length: 16 inches
Twist Rate: 1:10 (optimized for medium-to-heavy .308 bullets)
Finish/Treatment: Black Nitride (QPQ), inside and out
Gas System: Mid-length
Muzzle Threads: 5/8x24 (industry standard for .30 cal)
Platform Fit: AR-10/LR-308 pattern rifles
Model: 308M16L50B10R
UPC: 815875019107
Color: Matte black
Builder’s note: Confirm your upper pattern (e.g., DPMS/LR-308 spec), gas journal diameter (commonly .750"), muzzle thread, and profile details for gas block and handguard compatibility.
Performance Benefits You’ll Notice
Confidence across bullet weights: The 1:10 twist is a proven all-rounder, supporting hunting and match loads with reliable stability.
Cleaner shooting sessions: Nitride reduces copper/carbon adhesion, so you’ll spend less time scrubbing and more time sending rounds.
Smoother cycling: Mid-length gas helps reduce felt recoil and muzzle dip, promoting faster follow-up shots and consistent function.
Durability that lasts: QPQ-treated bore and 4150 CMV-class construction (Diamondback’s duty-grade spec) resist heat and erosion for long service life.
Ideal Use Cases
General-purpose .308 carbines for range, ranch, and practical training
Hunting setups needing a maneuverable rifle with trustworthy terminal performance
DMR/Recce-style builds with LPVOs or compact precision optics
Suppressed configurations tuned via adjustable gas blocks and appropriate buffer weights (where lawful)
Build & Compatibility Checklist
Upper receiver: AR-10/LR-308 pattern compatible with .308 Win
BCG & bolt: Large-frame .308 bolt carrier group properly headspaced to the barrel
Gas system: Mid-length gas tube + gas block sized to the barrel’s gas journal
Handguard: Free-float recommended; ensure it clears your muzzle device/suppressor mount
Muzzle device: 5/8x24 device or suppressor-ready adapter; time with shims or a crush washer per spec
Buffer system: Tune buffer weight and spring for your ammo and whether you run suppressed
Installation Tips
Prep & inspect: Degrease the barrel extension and gas journal; lightly oil mating surfaces.
Torque correctly: Install the barrel nut to manufacturer spec; verify gas tube alignment through the upper.
Secure gas block: Align to port; dimple/pin if preferred. Use appropriate thread locker on set screws.
Headspace check: Always confirm with GO/NO-GO gauges before live fire.
Function test & tune: Confirm last-round bolt hold-open and ejection pattern; adjust gas/buffer as needed (especially with suppressors).
Specifications
(Gas journal diameter, exact contour, and weight may vary by production run—confirm before ordering gas blocks and handguards.)
Frequently Asked Questions
Q: Will this fit an AR-15?
A: No. This is a large-frame AR barrel for AR-10/LR-308 pattern rifles chambered in .308 Winchester.
Q: What bullet weights pair best with 1:10?
A: It’s versatile—commonly 150–175/178gr bullets shoot very well. Test a few loads to find your barrel’s preferred node.
Q: Do I need an adjustable gas block?
A: Not required, but highly recommended, especially for suppressor use or if you shoot varied ammo types.
Q: Is .308 Win the same as 7.62 NATO?
A: They’re similar but not identical. Use factory, SAAMI-spec ammunition appropriate to the barrel and follow manufacturer guidance.
Q: What muzzle devices are compatible?
A: Any 5/8x24 .30-cal device (flash hider, brake, compensator, or suppressor mount) that matches your build and local laws.
Recommended Pairings
Adjustable gas block + mid-length gas tube for tuning
Free-float M-LOK handguard for accessory placement and consistent harmonics
LPVO or compact precision scope with solid one-piece mount
Two-stage trigger for precise control
Match or bonded hunting ammo tailored to your application
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Build smart, shoot straight, and keep maintenance simple. The Diamondback Firearms .308 Winchester 16" Black Nitride Barrel gives your AR-10 the balanced velocity, durability, and smooth cycling you need for hunting, training, and all-around .30-caliber performance.
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