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Questions & Answers
If this is purchased do you offer the kit for the stock support and internals for the lower thanks Expert Answer

The Tacfire AR15 Lower Parts Kit at the link below could be used with a Mil-Spec lower and the TacFire .300 Blackout Complete M-LOK Upper Assembly. However, we do not carry any lower receivers.

by Hunter, Gear Expert, December 2, 2022
Threads per inch on the specs.Is that a miss print?Should it be 24 not 34? Expert Answer

Correct, the TacFire .300 Blackout Complete M-LOK Upper Assembly has a thread pitch of 5/8x24 TPI. The product page is being updated.

by Ethan, Gear Expert, October 12, 2022
Customer Reviews
Helpful Positive Review 300Blk upper by Phantom, Verified Owner, March 22, 2024
Good product, great price, complete with bolt carrier group and charging handle. Excellent fit on the receiver. Will be buying a 6.5 Creedmoor upper when it becomes available. Great job Optics Planet.
1/1 found this helpful
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Product Info for TacFire .300 Blackout Complete M-LOK Upper Assembly

If you're browsing for a great bargain for the TacFire .300 Blackout Complete M-LOK Upper Assembly, then you've arrived at the absolute correct place..image

Formulated by using several of the most extremely durable and long lasting materials in existence, these AR15 Upper Receivers through TacFire will present you with something that will give a great deal of consistency.

TacFire has been generating high quality merchandise for a number of years, and the TacFire .300 Blackout Complete M-LOK Upper Assembly is their way of revealing just how much they care.

At OpticsPlanet, we ensure that it is our responsibility to receive the perfect solution for all your requirements, and exhibiting the TacFire .300 Blackout Complete M-LOK Upper Assembly is a thing that we are pleased to offer.

WARNING: California`s Proposition 65

Specifications for TacFire .300 Blackout Complete M-LOK Upper Assembly:

Manufacturer: TacFire
Caliber: .300 AAC Blackout
Barrel Profile: Government
Gas System Length: Pistol Length
Barrel Twist Rate: 1-8
Threads per Inch: 5/8x34
Handguard Type: Free-Float
Muzzle Device: A2 Flash Hider
Finish: Type III Hard Anodized
Color: Black
Gas Block Journal Size-Diameter: .075 in
Gun Rail: M-LOK
Condition: New
Barrel Material: 4150 Chrome Moly Vanadium
Bolt Carrier Group Included: MIL-SPEC
Magazine Included: No
Charging Handle Included: MIL-SPEC
Mount Type: M-LOK
Country of Origin: USA

Features of TacFire .300 Blackout Complete M-LOK Upper Assembly

  • Mil-Spec upper receiver chambered in .300 Blackout with A2 flash hider

Package Contents:

  • TacFire .300 Blackout Complete M-LOK Upper Assembly
  • Bolt Carrier Group / Charging Handle

TacFire .300 Blackout Complete M-LOK Upper Assembly Orderable Models

List of Orderable Models

TacFire Complete M-LOK Upper Assembly, .300 Blackout , 16in, Type III Hard Anodized, Black, Large, BU-300-16 , MPN: BU-300-16 , UPC: 729205501050 , Code: 29U-URC-BLUR7-BU-300-16
TacFire Complete M-LOK Upper Assembly, .300 Blackout , 8in, Type III Hard Anodized, Black, Large, BU-300-8 , MPN: BU-300-8 , UPC: 729205511387 , Code: 29U-URC-BLUR7-BU-300-8
TacFire Complete M-LOK Upper Assembly, .300 Blackout , 10in, Type III Hard Anodized, Black, Large, BU-3008-10 , MPN: BU-300-10 , UPC: 729205508325 , Code: 29U-URC-BLUR7-BU-3008-10

TacFire .300 Blackout Complete M-LOK Upper Assembly Unavailable & Discontinued Models

List of Unorderable Models

USED TacFire Complete M-LOK Upper Assembly, .300 Blackout , 8in, Type III Hard Anodized, Black, Large, BU-300-8, EDEMO1, Used, Condition Like New , MPN: BU-300-8-EDEMO1 , Code: 29U-URC-BLUR7-BU-300-8-EDEMO1
DEMO, TacFire Complete M-LOK Upper Assembly, .300 Blackout , 10in, Type III Hard Anodized, Black, Large, BU-3008-10 , MPN: BU-3008-10-DEMO , Code: 29U-URC-BLUR7-BU-3008-10-DEMO
USED, TacFire Complete M-LOK Upper Assembly, .300 Blackout , 8in, Type III Hard Anodized, Black, Large, BU-300-8 , MPN: BU-300-8-EDEMO , Code: 29U-URC-BLUR7-BU-300-8-EDEMO-RE-C
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