Complete AR-308 Lower Receiver

(41 reviews) Write a Review
1.90 LBS
Current Stock:

Updates and Shipping times will be listed on the bottom of the front page of our website!

Our Complete Lower Receiver is Built in House Using our Stripped AR-308 Hybrid Lower

Mil-Spec Lower Parts Kit

and a Mil-Spec Diameter Six Position Collapsible Stock. 


  • Lifetime Warranty

  • Receiver Constructed of High-Strength Nylon 6-6 and Marine-Grade Brass inserts

  • All Metal Forged Steel Parts Kit Installed

  • Custom Logos Available

  • DPMS Gen 1 308 Compatible 

  • Six position Stock

  • Custom Engraving Available


Tennessee Arms Company is proud to offer our AR-308 complete lower receiver. All colors are molded directly into and throughout the entire receiver so you never have to worry about wearing it off unlike a painted finish.


TAC Patent Pending design is Reinforced Nylon 6-6 with Marine Grade Brass threaded inserts molded into the material for strength and corrosion resistance.Our receivers are designed to accept any quality lower build kit. Using the Metal inserts into a high impact polymer receiver make the Tennessee Arms Receiver truly the Highest Strength/ Lightest weight hybrid receiver (6.2oz) on the market. We ARE the best receiver on the market and always will be.

Our receiver design is patent pending.

"I honestly can't find any sort of practical test that would harm this receiver or make it in any way inferior to an aluminum one."- Tom @ Apex Gunsmithing Experpt from a Third Party Review at


Federal law requires that you be 21 years or age or older to purchase a stripped receiver or frame. If a frame or receiver can only be made into a long gun (rifle or shotgun), it is still a frame or receiver not a handgun or long gun. However, they still are "firearms" by definition, and subject to the same GCA limitations as any other firearms. Please enter the phone number, city, and state of the licenced dealer you would like it shipped to when ordering.


  • 5

    Posted by Nestor Vincenty on 9th Mar 2021

    Light and perfect!

  • 5

    Posted by Martin Duran on 3rd Feb 2021

    The lower was perfect took a minute to ship but I understand because this covid going on makes things hard but I do recommend this lower

  • 5
    308 lower

    Posted by gene tveden on 1st Feb 2021

    It was as good as advertized

  • 5
    308 lower

    Posted by David Oxenreider on 5th Jan 2021

    This is a great product. I would recommend this item to anyone. This lower is built strong, and very well put together. Great company to deal with. Best of all made in the USA.

  • 5
    Very happy

    Posted by Craig Twombly on 22nd Dec 2020

    As per usual this is an excellent company to do business with. The product is just as advertised and it was shipped very quickly. I will continue to do business with them.

  • 4
    LR308 poly

    Posted by T on 11th Dec 2020

    So far so good. Not abused it but ran about 50 rounds through it. Fires like a Cadillac compared to my Springfield M1A. I put a Bear Creek Arsenal side charge upper and it has great fit and finish. So far I'm happy.

  • 5
    The Best Polymer Lower in it's Class

    Posted by Christopher M Lopez on 24th Nov 2020

    So pleased with my decision and purchase of the AR-308 Polymer Lower Receiver from Tennessee Arms. Well built, sturdy and the fit to my upper was perfect. I definitely will be purchasing more of the other lowers available in the future. Thank you Tennessee Arms!

  • 5
    .308 Complete Lower

    Posted by Loran A DeHonney on 19th Nov 2020

    I was a little skeptical purchasing a polymer .308 lower assembly. To my surprise, this lower functioned flawlessly. I am not one to write reviews or endorse products. But, TN Arms knocked it out the park with this lower assembly. Well done!!!!

  • 5

    Posted by Scott Scrima on 19th Nov 2020

    Overall the lower is pretty nice. It did fit my upper a little loose. More so that the other two 308 AR's I have that are aluminum. The rifle I built with it is kind of a "poor mans" SCAR and in that it is very light and runs well. This is my first polymer lower.... But probably not the last one I'll buy from Tennessee Arms.

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