This mil-spec AR 15 Pistol Kit combines a heavy-duty 10.5” barrel with a lightweight, 12” M-Lok handguard to afford shooters with optimal velocity and accuracy in a compact configuration. Included is a completely lower parts kit featuring a polished, enhanced trigger and lower parts kit.
You’ll also receive a 5-position buffer tube with an ergonomic SB Tactical pistol brace to improve shot group placement and reduce felt recoil. All components in the kit feature mil-spec fittings and finishes for a perfect match.
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 pistol brace.
Here’s the beginner’s guide to 80% lowers.
5.56 AR Pistol Kit Specs
Barreled uppers are assembled in-house before shipment.
Barrel
- Chamber: 5.56 NATO
- Contour: M4/Government
- Length: 10.5”
- Twist Rate: 1:7
- Gas System: Carbine
- Gas Port: 0.750”
- Muzzle Threads: 1/2×28
- Feed Ramps: M4
- Material: 4150 CMV
- Finish: QPQ Nitride
- Process: Button Rifled
- Lining: QPQ Nitride
- Extension: M4
- Muzzle: Recessed Flash Can
Handguard
- Attachment System: 12″ Slant 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: Phosphate Coating
- Interior: Chrome-Lined
- Gas Key: Staked, Chromed
- Charging Handle: Included
Lower Receiver Parts
- Buffer System: Mil-spec, Carbine
- Pistol Brace: SB Tactical SBA3
- Parts Kit: Mil-spec, single-stage
Lower receiver sold separately.
WARNING: Handling firearms parts and certain firearm 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, visit www.P65Warnings.ca.gov
Shipping Restrictions
We cannot ship certain parts and accessories to states that prohibit the sale or ownership of such components, like California, New York, and others. Before ordering, see our shipping restrictions for a list of all prohibited states and locales. We try our best to keep our shipping restrictions current, but state laws change almost daily. It is your responsibility to be aware of your local firearms laws before purchasing from our website or machining a firearm.
80-Lower.com only ships within the United States. Federal law prevents international shipments of our products.
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 RestrictionsShipping 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.
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