AR15 Build Kit - 5.56mm (16" Nitride Barrel & 12" M-Lok Handguard)

Get your hands on this mean-looking AR-15 and hit the range with MOA groupings. Then brag about having built it yourself. This build kit gets you quality AR parts chambered in 5.56mm NATO with a lightweight (M-LOK) free-float handguard. With this kit, we added a little more: We threw out the standard lower parts kit and replaced it with an Anderson LPK. That means you get a polished, stainless steel trigger and hammer that cycle your rifle smoothly with clean breaks every time.  ust get some mags, a receiver, and ammo, and add the backup sights or optic of your choice.

What’s Included

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

New builder? This guide explains 80 percent 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: 1:7
• 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
• 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

• Profile: M16/Full-Auto
• Steel: Carpenter No. 158 (Mil-Spec)
• 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.