TacFire BU-9MM-7 Pistol Upper Assembly — 9mm Luger, 7" Black Nitride Barrel, 7075-T6 Receiver, M-LOK® Handguard — Includes Bolt Carrier Group (BU9MM7 | UPC 729205521003)

Build a smooth-shooting, compact PCC the easy way. The TacFire BU-9MM-7 Pistol Upper Assembly delivers a ready-to-run 9mm Luger top end with a 7" black nitride barrel, rugged 7075-T6 aluminum receiver (black anodized), and a slim free-float M-LOK® handguard for modern accessory mounting. Best of all, it includes a 9mm Bolt Carrier Group (BCG), so you can skip the parts chase, pin it to a compatible 9mm lower, add an optic, and hit the range.

Why Choose the TacFire BU-9MM-7 Upper?

• Turnkey Convenience: BCG included for matched reliability and simplified headspacing/compatibility.

• Balanced 7" Barrel: More dwell time and velocity than micro 4–5" setups while staying compact for CQB-style drills and carry.

• Black Nitride Barrel: Corrosion- and wear-resistant finish inside and out for easier cleanup and long service life.

• 7075-T6 Strength: Forged upper resists flex, locks in optics, and stands up to high round counts.

• Free-Float M-LOK® Rail: Mount lights, handstops, and QD cups anywhere you want without influencing point of impact.

• AR-Platform Ergonomics: Familiar controls, endless accessories, and fast training transfer from your 5.56 carbines.

Key Features & Specs

• Model / Part: BU-9MM-7 (also listed as BU9MM7)

• UPC: 729205521003

• Caliber: 9mm Luger (9×19)

• Operating System: Typically straight blowback (verify lower/bolt compatibility)

• Barrel: 7" steel, black nitride finish, threaded muzzle (common 9mm threads are 1/2×28 or 1/2×36 — confirm exact pitch before buying a muzzle device or suppressor mount)

• Receiver: 7075-T6 aluminum, black anodized

• Handguard: Free-float M-LOK®, slim/ventilated with continuous top rail section for sights/optic

• Bolt Carrier Group: Included (9mm BCG assembly)

• Charging Handle: May or may not be included — verify retailer BOM

• Muzzle Device: Varies by lot — confirm inclusion

Performance You’ll Notice

• Reliable Cycling: 7" length and matched 9mm BCG support consistent operation with quality 9mm loads.

• Soft Recoil, Fast Transitions: Blowback 9mm plus free-float rail makes for controllable splits and quick target-to-target movement.

• Low-Maintenance Running: Nitride surfaces resist fouling; carbon wipes off more easily after high-volume sessions.

• Accessory-Ready: M-LOK® slots at 3/6/9 (often 45° as well) for lights, pressure pads, and handstops without adding bulk.

Ideal Use Cases

• Home & Property Training: Compact OAL for maneuvering indoors (use hearing/eye protection; follow all laws).

• PCC Practice & Matches: Economical 9mm ammo lowers training cost while keeping AR controls.

• Truck/Pack Projects: Lightweight, space-efficient top end for discreet carry and quick deployment.

• Suppressed Builds (where legal): The 7" barrel pairs well with muzzle devices and cans—confirm thread pitch and manufacturer torque specs.

Compatibility & Build Notes

• Lower Receiver: Requires a 9mm AR-pattern lower or mag-block system; verify Glock-pattern vs. Colt-style compatibility across lower, BCG, and magazines.

• Buffer System: Use a 9mm-appropriate buffer and spring; heavier buffers often smooth ejection and reduce bolt speed in blowback setups.

• Magazines: Choose reliable mags that match your lower (Glock-pattern or Colt).

• Sights/Optics: Add BUIS or a micro red dot; confirm mount height and potential co-witness.

• Muzzle Devices: Always verify thread pitch; re-torque and re-zero after installing brakes, flash hiders, or suppressor mounts.

Setup Tips (Non-Instructional)

1. Lube & Inspect: Lightly oil the BCG/rails; check handguard and barrel-nut fasteners for spec torque.

2. Function Test: Verify last-round bolt hold-open with your mags; tune buffer weight if ejection is erratic.

3. Zero Smart: A 25- or 50-yard zero is practical for 9mm ARs; validate holds at your typical training distance.

4. Cable Management: Use M-LOK® clips or channels to tidy pressure switches and prevent snags.

Legal & Safety Reminder

Know and follow federal, state, and local laws regarding AR-pistol builds, barrel length, braces/stocks, suppressors, transport, and magazine capacities. Configure and use your firearm in full compliance with current regulations.

What’s in the Box*

• TacFire BU-9MM-7 Pistol Upper Assembly — 7" black nitride barrel, 7075-T6 black-anodized receiver, free-float M-LOK® handguard

• 9mm Bolt Carrier Group (BCG) — included
  *Charging handle and muzzle device inclusion varies — confirm the retailer’s bill of materials.

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TacFire BU-9MM-7 Pistol Upper Assembly — 9mm Luger, 7" Black Nitride Barrel, 7075-T6 Black-Anodized Receiver, M-LOK® Handguard, BCG Included (BU9MM7 | 729205521003): a durable, compact, and accessory-ready top end that brings AR ergonomics to soft-recoiling 9mm performance—ideal for PCC training, suppressed builds, and fast-handling defensive setups.

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