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TacFire Unassembled AR-15 16in Rifle Build Kit Color: Black, Fabric/Material: Aluminum, Steel, $20.00 Off w/ Free S&H

TacFire Unassembled Rifle Build Kit, AR-15, 5.56x45mm NATO, 16in Barrel, 15in Handguard, 1-8 Twist, 1/2x28, A2 Birdcage, Black, RK556LPK
TacFire Unassembled Rifle Build Kit, AR-15, 5.56x45mm NATO, 16in Barrel, 15in Handguard, 1-8 Twist, 1/2x28, A2 Birdcage, Black, RK556LPK
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TacFire Unassembled Rifle Build Kit, AR-15, 5.56x45mm NATO, 16in Barrel, 15in Handguard, 1-8 Twist, 1/2x28, A2 Birdcage, Black, RK556LPK

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Questions & Answers
Does it come with a barrel nut? Expert Answer

Yes, the TacFire Unassembled AR-15 16in Rifle Build Kit includes a barrel nut. It also includes:
(1) 16" Barrel 1:8 Twist/Parkerized (USA Made)
(1) 5.56 NATO Bolt Carrier Group (USA Made)
(1) Slim Mlok Free Float Hand Guard15" (USA Made)
(1) Lower Parts Kit w/Trigger & Hammer-(USA Made)
(1) Mil Spec 6-Position Stock
(1) .750 Gas Block
(1) Carbine Length Gas Tube
(1) Standard Receiver End Plate
(1) Mil-Spec/Commercial Castle Nut/Steel
(1) Mil-Spec Buffer Tube/Alum.
(1) 3 oz. Buffer
(1) Buffer Tube Spring
(1) Mil-Spec Charging Handle Alum.
(1) Dust Cover
(1) Forward Assist
(1) A2- 1/2"x28 Thread Bird Cage A2 Muzzle Brake
(1) A2 Pistol Grip/Black (USA Made)
(1) Upper Receiver 5.56/.233/.300AAC, M4 Feed Ramps (USA Made)

by Ethan, Gear Expert, August 19, 2022
Is the tacfire RK 5.56 - LPK an AR-15 it does not say AR-15.

It is a build kit, to have a completed rifle you will need a standard stripped lower and a magazine,

by Dan, Verified Owner, August 9, 2021
View All Q&A You Have a Question? Ask!
Customer Reviews
Helpful Positive Review
Nice Product by Mike H, Verified Owner, February 28, 2023
Great product for the price, it’s gonna make a great truck gun. Build the AR in about an hour. And put 60 rounds through it with no issues. Be careful opening the packages. Some of the parts are extremely small.
7/7 found this helpful
Read 1 Review
Color:
Black
Caliber:
.223 Remington, 5.56x45mm NATO
Gun Make:
AR Platform
Gun Model:
AR-15, M4
Included Accessories:
Standard
Condition:
New

Code: 29U-LPK-RK556LPK

MPN: RK556-LPK

UPC: 811261029019

List: $399.99Save $20.00
$379.99

Product Info for TacFire Unassembled AR-15 16in Rifle Build Kit

The TacFire Unassembled AR-15 Complete Rifle Kit is an effective way to modify your rifle. With a 1:8 twist rate, your new firearm will stabilize everything from 55-grain range ammo to 69 plus grain match projectiles. With the mil-spec fire control group, you'll get positive ignition with steel-cased ammo with a traditional 5 to 6-pound trigger pull. And the free-floating handguard will keep your groups tighter than a standard M4 style upper. Once these AR15 Lower Parts are assembled, the free-floating barrel has excellent accuracy potential. The TacFire AR-15 Complete Rifle Kit has everything you need for a reliable AR-15 build.image

WARNING: California`s Proposition 65

Specifications for TacFire Unassembled AR-15 16in Rifle Build Kit:

Manufacturer: TacFire
Color: Black
Fabric/Material: Aluminum, Steel
Caliber: 5.56x45mm NATO, .223 Remington
Gun Make: AR Platform
Gun Model: M4, AR-15
Gun Type: Rifle
Included Accessories: Standard
Condition: New
Muzzle Device: A2 Flash Hider
Handguard Length: 15 in
Charging Handle Included: MIL-SPEC
Gas Block Journal Size-Diameter: .750 in
Barrel Twist Rate: 1-8
Handguard Type: Free-Float
Threads per Inch: 1/2x28
Gas System Length: Carbine Length
Gun Rail: Picatinny, M-LOK
Bolt Carrier Group Included: MIL-SPEC

Features of TacFire Unassembled AR-15 16in Rifle Build Kit:

  • Build a complete AR-15 that can do it all at an excellent price point with Tacfire;
  • This kit ships to your door unassembled, with everything you need, less your choice in lower receiver to make a range-ready rifle;
  • With a reliable carbine-length gas system and a free-floated barrel, this kit will come together into a gun that's ready to run

Package Contents:

  • TacFire Unassembled AR-15 16in Rifle Build Kit
  • 16" Barrel 1:8 Twist/Parkerized
  • 5.56 NATO Bolt Carrier Group
  • 15" Slim M-LOK Free Float Hand Guard
  • Lower Parts Kit w/Trigger & Hammer
  • Mil Spec 6-Position Stock
  • .750 Gas Block
  • Carbine Length Gas Tube
  • Standard Receiver End Plate
  • Mil-Spec/Commercial Castle Nut/Steel
  • Mil-Spec Buffer Tube/Alum
  • 3 oz. Buffer
  • Buffer Tube Spring
  • Mil-Spec Charging Handle Alum
  • Dust Cover
  • Forward Assist
  • A2- 1/2"x28 Thread Bird Cage A2 Muzzle Brake
  • A2 Pistol Grip/Black
  • Upper Receiver 5.56/.223, M4 Feed Ramps

TacFire Unassembled AR-15 16in Rifle Build Kit Orderable Models

List of Orderable Models

  • TacFire Unassembled Rifle Build Kit, AR-15, 5.56x45mm NATO, 16in Barrel, 15in Handguard, 1-8 Twist, 1/2x28, A2 Birdcage, Black, RK556LPK , MPN: RK556-LPK , UPC: 811261029019 , Code: 29U-LPK-RK556LPK
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Last updated 2026-08-21 UTC.