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5.56 AR 15 Rifle Kit (16″ Stainless Barrel 1:8 Twist & 15″ M-Lok Handguard)

$669.99
SKU:
5561618(SS)-MLOK(15)-RK

Description

Most shooters think of a sub-MOA AR and imagine a long barrel, bulky setup, and heavy rifle. That’s not the case with our new stainless barreled AR-15 upper assembly. It sports a super-accurate M4 profile barrel forged from Crucible 416R, the most accurate barrel steel on the market with a sub-MOA guarantee.

Outside, you’re getting our custom billet aluminum M-Lok handguard. It’s all tied together with a bombproof forged M4 flattop upper, and a staked and chrome-lined M16 BCG with charging handle keeps your rounds feeding reliably.

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 Kit Specs

Barreled uppers are assembled in-house before shipment.

Barrel

  • Chamber: 5.56 NATO
  • Contour: M4/Government
  • Weight: 1.50 lbs.
  • Length: 16"
  • Twist Rate: 1:8
  • Gas System: Carbine
  • Gas Port: 0.750”
  • Gas Hole Dia.: 0.072”
  • Thread Pitch: 1/2x28
  • Feed Ramps: M4
  • Material: 416R Crucible Stainless
  • Lining: Black Nitride
  • Extension: M4
  • Muzzle: A2 “Birdcage” Flash Hider

Handguard

  • Attachment System: M-Lok
  • Finish: Type III Hardcoat Anodized (Mil-Spec)
  • Top Rail: Mil-Spec 1913 Picatinny
  • Material: Billet 6061-T6 Aluminum
  • Weight: 8.6 oz.
  • Length: 15”
  • Inner Diameter: 1.355”
  • Barrel Nut: Included

Stripped Upper Receiver

  • Profile: M4 Flattop
  • Material: 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: Carpenter No. 158 (Mil-Spec)
  • Exterior: Phosphate Finish
  • Interior: Chrome-Lined
  • Gas Key: Chrome-Lined, Staked
  • 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.

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

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

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.