AR-308 Lightweight Lower Receiver- Single-WEEKEND SALE

$64.99 $52.00
(You save $12.99 )
(25 reviews) Write a Review
0.43 LBS
Current Stock:




DPMS Gen 1 Style lower receiver for the 7.62x51/ 308 cartridge

This item must be sent to an FFL dealer


  • Half the weight of a metal lower

  • Lifetime Guarantee

  • Easy Assembly

  • Tactical Colors available 

The AR-308® Receiver is designed to be stronger and lighter than anything on the market today. We invented the hybrid AR lower receiver and we used that experience in designing the AR-308. We have used our TN ARMS 15 lower in every caliber from .22 LR to 50 BMG. The AR-308 is 30% bigger and includes reinforcement in key areas. This lower receiver assembles just like an AR15 style lower. AR308 lpk is available here: with the roll pin (like an AR15) we use instead of a screw.

The AR-10 type rifle does not have dimensional standards like the AR-15 series does. Not all upper receivers will fit as well as others. We recommend upper receivers from Aero Precision, Head Down Products, Delta Tactical, and the Palmetto State Gen 2. Any AR-15 style trigger will fit fine. 



 Weight is 6.3 ounces





  • 5
    exceptional fit and finish

    Posted by Jack B. on 20th May 2016

    I was pleased overall with the ar-15 lower I purchased last year, but the ar 308 reciever takes the polymer reciever to a higher level of precision. Very impressed with the TN Arms product

  • 5
    good job

    Posted by Unknown on 11th May 2016

    Hope you keep making this lower

  • 4
    Solid Product

    Posted by MITCHELL WEST on 4th Apr 2016

    Overall this is a great product, and I'm very satisfied with the purchase. The polymer feels solid and fit great with my smooth side DPMS upper. The only issue I had was that some of the polymer ran onto the threads for the receiver extension, and I had to scrape it off in order to get the buffer tube to screw in. Would definitely buy another one.

  • 5
    very nice quality

    Posted by Justin on 26th Mar 2016

    I set it next to a aluminum lower and didn't see any difference beside the weight. All the holes for the LPK are where they need to. There are no casting marks or imperfections. Will definitely come back for my next build

  • 5
    Great product by a great company

    Posted by David Freppon on 4th Mar 2016

    I can't brag on these guys and gals enough. In short you guys and gals rock. Shut up and take my money

  • 5
    Best polymer receiver out there.

    Posted by Unknown on 2nd Mar 2016

    Very Solid receiver. I was surprised of the quality and finish.

  • 4
    First poly lower

    Posted by Unknown on 3rd Feb 2016

    Got this lower last week, looked really nice everything went together nice, except the front take down pin, I could not use my tool for putting the spring and detent pin in but I got it after a few try's. put a upper I just built on took range and put 500 rounds down range so far, ran like a champ , I liked it so much I order 2 more.

  • 5
    outstanding product

    Posted by Rocky Stewart on 13th Jan 2016

    This lower is flawless. Went together easily. Lightweight build in 338 federal. Outstanding. Will buy another in the future.

  • 5
    great product

    Posted by fletcher on 9th Jan 2016

    This 308 lower much better than any I've used. No flaws evident and assembled with ease. I have no doubt it will last longer than I'll be able to shoot it. Thanks for a great product at a really good price