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5.56 AR 15 Rifle Kit - 16" Parkerized Barrel, 1:8 Twist Rate with 15" M-Lok Handguard

Was: $499.99
Now: $379.99
SKU:
UA556CM41618P-15M3_AR15-LPK_M4-STOCK_AR15-BTA
Availability:
In Stock! Ships within 3 - 5 Business Days!
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Time to get more "hands on" with your black rifles. What do we mean by more "hands on?" We mean it's time for you to take more control over your AR-15 experience. Don't just go buy another AR from your local gun shop; build it your damn self with this kit.

This build kit gets you an AR chambered in 5.56mm NATO (yup, the same caliber as the military's M4 rifles) with a 15-inch M-LOK free-floating handguard for you to mount your vertical grip, tac light, or whatever else onto it. Just get a lower, some mags and ammo, and add the backup sights or optic of your choice, and you're good to go.

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. 

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: Parkerized
  • Process: Button Rifled
  • Lining: None
  • Extension: M4
  • Muzzle: A2 “Birdcage” Flash Hider

Handguard

  • Attachment System: 15" M-Lok
  • Finish: Type III Hardcoat Anodized (Mil-Spec)
  • Top Rail: M1913 Picatinny
  • Material: Billet 6061-T6 Aluminum
  • Attachment: Barrel Nut 

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: Black Nitride
  • Interior: Black Nitride
  • Gas Key: Staked
  • Charging Handle: Included

Lower Receiver Parts

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

Lower receiver sold separately.

WARNING: Handling firearms parts and accessories can expose you to lead and other petroleum products known to the State of California to cause cancer and reproductive harm. For more information go to: www.P65Warnings.ca.gov

Shipping Restrictions

Shipping of various parts and/or accessories are prohibited to states and locales (ie New Jersey, California, New York, etc…) with restrictions against certain parts and/or accessories or "assault weapons" (i.e. states with high-capacity magazine restrictions, manufacturing of semi-automatic weapons, etc..). It is your responsibility to be aware of your local firearms laws before purchasing from our website or machining a firearm. We try our best to keep our shipping page current, but laws change daily.

AR-15lowerreceivers.com only ships within the United States. Federal legislation dictates we cannot ship our products internationally.

Barrel Size:
16"
Caliber:
5.56
Twist Rate:
1/8
Barrel Finish:
Parkerized
Handguard Type:
Free-float
Gas System Length:
Carbine-length
Barrel Steel:
4150 CMV

We are a national retailer of individual components and not all products depicted on this website are legal in every state. Shipping of various products found on this website are prohibited to some states (such as California, Connecticut, District of Columbia, Hawaii, New Jersey, New York, Rhode Island, and Washington). The information, pictures, text or products presented on this website are not a representation by us, and should not be understood by you, that any product or completed firearm is legal to assemble or own in your state of residence. We encourage each and every builder to perform their own research about the state and federal laws that apply to them. It is your responsibility to understand the law and we encourage you to consult with an attorney or your local ATF representative.