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5.56 AR 15 Rifle Kit - 16" Stainless Barrel (Fixed Front Sight), 1:7 Twist Rate

Was: $455.99
Now: $379.99
SKU:
43526
Availability:
Out of Stock

Are you looking for the perfect AR-15 Rifle Build Kit? Look no further. This Build Kit is ideal for any level of operator, looking to build their very own AR-15 rifle. This kit comes with a 16” mid-length 5.56 barrel and a mounted Front Sight. This barrel length is perfect for a new weapon owner, or an experienced operator. The ideal options for any and all operators looking to complete their first build, or add another weapon to your collection.

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 the buttstock. 

5.56 AR 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: 416R Crucible Stainless
  • Finish: Stainless
  • Process: Button Rifled
  • Lining: Stainless
  • Extension: M4
  • Muzzle: A2 “Birdcage” Flash Hider

Handguard

  • Attachment System: Two-Piece A2 Handguard
  • Finish: Matte Black
  • Top Rail: None
  • Material: Polymer w/ aluminum heat shield
  • Attachment: Mil-Spec Delta Ring

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 not included.

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.

GunBuilders.com only ships within the United States. Federal legislation dictates we cannot ship our products internationally.

Barrel Size:
16"
Caliber:
5.56

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.