AR15 Build Kit - 5.56mm NATO (16" Parkerized Barrel & 15" M-Lok Handguard) with Fire/Safe Marked 80% Lower



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 some mags and ammo, and add the backup sights or optic of your choice, and you're good to go.

What’s Included & Specifications


  • 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


  • Attachment System:  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:  M6/Full-Auto
  • Steel: Carpenter No. 158 (Mil-Spec)
  • Exterior:  Phosphate Coating
  • Interior:  Chrome-Lined
  • Gas Key:  Staked, Chromed
  • Charging Handle:  Included

AR-15 Rifle Kit Details (Expanded):

Upper Assembly: This upper receiver is Forged from 7075 – T6 aluminum and is hard coat anodized black for durability. Featuring M4 feed ramp cuts, these upper receivers are made in the USA.  The upper assembly comes to you pre-assembled and ready to go.  Simply mount it onto your completed lower assembly, and add the backup sights of your choice.  Since its barrel is chambered in .223 Wylde, it’s made to shoot 5.56mm NATO and .223 rounds.

80% Lower Receiver: This kit comes with your choice of either a forged or a billet fire and safe-engraved black 80% lower. Alternatively, choose the “No lower” option if you already have your lower picked out.  Our lower receivers are already anodized to match the upper receiver assembly perfectly. The 80% lower is ready for you to mill the trigger pocket and drill the holes for the trigger pins and safety selector.

Please note: This AR-15 build kit requires that the builder complete the 80% lower receiver themselves, but that’s the rewarding part of the experience (and the only way to build your own AR-15 without the need of an FFL transfer or serialization).  

No FFL required  Made in the USA  Lifetime Warranty

Shipping Restrictions only ships within the United States. Federal legislation dictates we cannot ship our products internationally. 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 (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. We try our best to keep our shipping page current, but laws change daily.

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, 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.