Description
This stock-less Buffer Tube Assembly is perfect if you’re completing an AR pistol, or if you bought a custom or upgraded stock for your rifle build. This kit includes all other buffer components needed to work with your lower parts kit and upper assembly.
What’s Included
- Buffer Tube
- Carbine Buffer
- Recoil Spring
- Castle Nut
- Latch Plate
Mil-Spec / Standard Buffer Fitment
This buffer assembly includes a mil-spec tube with an outer diameter of 1.148″ and a thread pattern of 1-13/16″ x 16. It’s designed to fit any typical AR-15 stripped lower receiver or 80% lower that’s also advertised with mil-spec fittings. Virtually all modern AR-15 receivers are manufactured with mil-spec fittings.
Commercial vs. Mil-spec Buffer Tubes
The tube is also machined with the typical six-position detents, ensuring it’s compatible with most M4/M16-type and other adjustable aftermarket buttstocks and pistol braces.
Check out custom stocks and AR braces here.
Includes Carbine Buffer
This buffer tube assembly includes a 3.0-ounce Carbine recoil buffer. It’s compatible with most calibers that are currently available for chambering in 5.56/.223 receivers, including 300 Blackout and 6.5 Grendel. This kit will also work with our AR9 80% lowers and any retail-bought 9mm lowers, but we recommend investing in a heavier (8.0-ounce) buffer.
Buffer Installation Instructions
Installing the buffer assembly is relatively simple. You will need an Armorer’s Wrench to get the job done. If you’re also installing your lower parts kit, we recommend buying a set of roll pin punches.
Guide: How to Install The AR Buffer and LPK
Need an Upper Assembly?
If you’re completing a custom AR build with this buffer tube assembly, be sure to check out our barreled uppers. Rifle and pistol configurations are available in the most popular AR calibers, and each includes a bolt carrier and charging handle.
Buy a Barreled Upper Assembly Here.
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 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.
- Caliber:
- 5.56
- Caliber:
- .223 Wylde
- Platform:
- AR15
Frequently Asked Questions
- How fast is shipping?
- Orders ship within 3 business days to your selected Michigan FFL dealer with full tracking info.
- Where can I pick up my firearm?
- Pickups are at licensed FFL dealers in Michigan. Use terms like “gun shop near me in Michigan” or “FFL dealer in Michigan” to locate one.
- Do I need a permit or license?
- For handguns, residents must obtain a License to Purchase (unless they already hold a CPL). Long guns from FFL dealers require no additional permits—per Michigan law.
- Can I carry this concealed or openly?
- Michigan is a “shall-issue” state for concealed carry at age 21+. Open carry is allowed without a permit, except in vehicles or specified locations :contentReference[oaicite:20]{index=20}.
- Is this Mil-spec AR-15 Buffer Tube Assembly right for me?
- Our Mil-spec AR-15 Buffer Tube Assembly is ideal if you’re shopping for: Mil-spec AR-15 Buffer Tube Assembly, ar parts, AR Parts. Great options for both beginners and experienced owners.
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Frequently Asked Questions
- How fast will my order ship?
- We ship all orders within 1-3 business days to your licensed Michigan FFL dealer. Tracking info will be emailed.
- What is your return policy?
- Non-firearm items can be returned within 14 days unused. Firearms sales are final after FFL transfer. See full return policy.
- Is the Mil-spec AR-15 Buffer Tube Assembly suitable for me?
- Our Mil-spec AR-15 Buffer Tube Assembly is popular among Michigan customers for personal defense and sport shooting.
