5.56 AR 15 Rifle Kit (16" Nitride Barrel 1:8 Twist & 12" M-Lok Angled Handguard)

Please Note: Given the current demand for this product and supply shortages, your order may ship with a black hammer and trigger or a stainless steel hammer and trigger.

Check out one of the standards and one of the most lightweight rifle kits in our catalog with a barrel and twist rate that are more accepting of a wider array of bullet weights. This mil-spec AR kit comes to you chambered in 5.56mm NATO, the same caliber as our military's rifles. It comes with an ultra-light, skeletonized handguard that looks great and feels even better. It's all paired with mil-spec lower parts and an M16 profile BCG. And a 1:8 twist rate in the barrel means you can shoot some of the lighter or heavier grain of 5.56mm rounds.

What’s Included

This kit is not a firearm. It includes an assembled upper receiver, lower parts kit, and buffer assembly with buttstock. This kit does not include a stripped lower receiver (the firearm component). The bolt carrier group is optional. Pair this rifle kit with an AR-15 80% lower receiver and AR-15 jig to fabricate a receiver, sold separately.

Here's the beginner's guide to 80% lowers.

AR-15 Rifle Kit Specs

Barreled uppers are assembled in-house before shipment.

Barrel

• Chamber: 5.56 NATO
• Contour: M4/Government
• Length: 16”
• Twist Rate: 1:8
• Gas System: Carbine
• Gas Port: 0.750”
• Gas Hole Dia.: 0.070”
• Muzzle Threads: 1/2x28
• Feed Ramps: M4
• Material: 4150 CMV
• Finish: QPQ Nitride
• Process: Button Rifled
• Lining: QPQ Nitride
• Extension: M4
• Muzzle: A2 “Birdcage” Flash Hider

Handguard

• Attachment System: 12" M-Lok, Angled
• Finish: Type III Hardcoat Anodized (Mil-Spec)
• Top Rail: M1913 Picatinny
• Material: Billet 6061-T6 Aluminum
• Attachment: Barrel Nut 

Stripped Upper Receiver

• Profile: M4 Flattop
• Material: Forged 7075-T6 Aluminum
• Finish: Type III Hardcoat Anodized (Mil-Spec)

Bolt Carrier Group

The bolt carrier group and charging handle are not included unless you select them as an option when adding this kit to your shopping cart.

• Profile: M16/Full-Auto
• Steel: 9310 Tool, HPT/MPI-tested
• Exterior: Phosphate Coating
• Interior: Chrome-Lined
• Gas Key: Staked, Chromed
• Charging Handle: Included

Lower Receiver Parts

• Buffer System: Mil-spec, Carbine
• Buttstock: Mil-spec, M4-type
• Parts Kit: Mil-spec, single-stage

Receiver sold separately

No FFL or serialization is required to fabricate a receiver under federal law. However, state laws vary. Some states require serialization or have banned 80% lowers and gun-making kits. We encourage each and every builder to perform their own research about the state and federal laws that apply to them.