TacFire Rifle Upper Assembly — .308 Win, 18" Black Nitride Barrel, 7075-T6 Aluminum Receiver, Black Anodized with M-LOK® Handguard — AR-Platform (BU30818 | UPC 729205515323)

Build a hard-hitting, do-everything .30-cal AR with the TacFire BU30818 Rifle Upper Assembly. Chambered in .308 Winchester, this top end features an 18" black nitride barrel for durability and easy maintenance, a rugged 7075-T6 aluminum receiver with a black anodized finish, and a slim free-float M-LOK® handguard for modern accessory mounting. Whether you’re piecing together a precision-minded hunting rig or a range-ready .308 AR, the BU30818 delivers the strength, accuracy potential, and upgrade flexibility you want—without the parts chase.

Why Choose the TacFire BU30818 Upper?

• Balanced 18" Barrel Length: The sweet spot for .308 ARs—excellent velocity for medium/long-range shots while staying handier than a 20"+ build.

• Black Nitride Barrel Treatment: Corrosion-resistant, hardened surface inside and out for long service life and simpler cleanup.

• 7075-T6 Receiver Strength: Forged, high-strength aluminum holds up to .308 recoil and high-round-count training.

• Free-Float M-LOK® Handguard: Mount lights, bipods, QD cups, and tripods without inducing POI shift—keep the barrel free to do its best work.

• AR-Platform Modularity: Pair with a compatible .308/AR-10-pattern lower to complete a reliable, optics-ready rifle.

Key Features & Specs

• Model / Part: BU30818

• UPC: 729205515323

• Caliber: .308 Winchester (accepts most .308 Win loads; 7.62×51 NATO use depends on chamber—verify ammunition compatibility)

• Barrel: 18", black nitride finish, threaded muzzle (commonly 5/8x24—confirm before purchasing a device)

• Receiver: 7075-T6 aluminum, black anodized

• Handguard: Free-float M-LOK®, slim profile, top rail for optics/BUIS

• Gas System: Mid/Intermediate configuration typical for 18" .308 (verify exact spec with seller)

• BCG / Charging Handle: Check retailer BOM—some packages include them; others are upper-only

• Muzzle Device: Not always included—verify listing

• Weight: Varies by lot and handguard length (request spec sheet if needed)

Performance You’ll Notice

• Consistent Accuracy: Free-floated barrel and rigid receiver promote tight groups with quality match or hunting ammo.

• Cleaner Running: Black nitride barrels resist fouling—carbon wipes easier and bore maintenance is simplified.

• Accessory-Ready: M-LOK® slots at 3/6/9 (and often 45°) let you add a bipod, Arca adapter, handstop, or white light wherever you need it.

• Manageable Recoil Track: Pair with a tuned buffer system and brake/suppressor mount for quick follow-ups and easier spotting.

Ideal Use Cases

• Big-Game & Predator Hunting: 18" tube carries energy into practical field distances; mount a 2-10× or 3-15× and go.

• Ranch & Property Rifle: Durable finishes and modular rail for lights/slings in changing weather.

• Range / Practical Precision: Stretch to 600+ with high-BC bullets and good dope; free-float handguard helps maintain POI.

• Preparedness Builds: .308 terminal performance in a familiar AR manual of arms.

Compatibility & Build Notes

• Lower Receiver Pattern: Fits AR-10/.308 AR lowers that match the manufacturer’s spec (DPMS/LR-308 pattern is most common; confirm your lower’s pattern, rail height, and barrel nut interface).

• Buffer System: Use a .308-specific buffer, spring, and tube; tune weight for ejection pattern and lock-back with your ammo.

• Bolt Carrier Group: Ensure a .308/7.62 BCG with the correct headspace for your barrel; if a BCG is included, verify coating and specs.

• Muzzle Devices / Suppressors: Confirm thread pitch (typically 5/8x24). Re-torque and re-zero after installing a device.

• Magazines: Use quality SR-25/DPMS-pattern .308 magazines for reliable feeding.

• Rail Height: If mixing brands, confirm upper/handguard top-rail height for seamless BUIS/optic alignment.

Setup Tips (Non-Instructional)

1. Lube & Inspect: Lightly oil the BCG (if included) and contact points; verify gas block screws and handguard fasteners.

2. Ammo Choice: Start with proven .308 loads (150–175gr) to establish baseline groups, then tailor for hunting or match use.

3. Zero Smart: A 100-yard zero is versatile for .308; confirm drops at 200/300/400 with your chosen bullet.

4. Torque Matters: Follow torque specs on scope mounts, muzzle device, and handguard to preserve accuracy.

5. Tune Recoil: Adjust buffer weight or brake choice to keep ejection 3–4 o’clock and maintain fast sight recovery.

Maintenance & Care

• Routine Cleaning: Black nitride simplifies bore care—patch with solvent, light brush if needed, and re-oil.

• Check Fasteners: Verify handguard clamp/barrel nut and gas block screws after break-in.

• Protect the Finish: Wipe exterior with a corrosion-inhibiting oil after wet or salty environments.

What’s in the Box*

• TacFire BU30818 .308 Win Upper — 18" black nitride barrel, 7075-T6 black anodized receiver, free-float M-LOK® handguard

• (BCG, charging handle, and muzzle device inclusion varies—confirm the retailer’s bill of materials.)

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TacFire Rifle Upper Assembly — .308 Win, 18" Black Nitride Barrel, 7075-T6 Aluminum Black Anodized Receiver, M-LOK® Handguard (BU30818 | 729205515323): the balanced, hard-use .308 AR upper that blends durability, precision potential, and modern ergonomics—ready for glass, tuned recoil, and your next hunt or range day.

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