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AR15 Ambidextrous 80% Lower

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JL Billet
1.00 LBS
$5.50 (Fixed shipping cost)
Minimum Purchase:
1 unit(s)

 Product Description

JL Billet AR-15 Ambidextrous 80% Lower

JL Billet AR-15 Ambidextrous 80% lower is a unique design geared towards the serious builder. The integrated trigger guard, flared magwell, upper tensioning set screw, screw in bolt catch pin, trigger reset set screw and threaded take-down spring hole make this 80% the best on the market.  No presses, hammers or punches required! Also available in 100% contact us with your FFL information.


  • CNC machined from 7075-T6 billet aluminum.
  • Mil-spec component compatible.
  • Ambidextrous bolt release (included)
  • Integrated trigger guard.
  • Flared magwell.
  • Upper tensioning set screw.
  • Screw in bolt catch pin.
  • Trigger reset set screw.
  • Threaded take-down spring hole.
  • Includes set screws

80% Does not require an FFL. Warning: Modification of a non-firearm style casting may subject the owner to all applicable Federal, State and Local firearms laws - violation of firearms laws can result in severe criminal penalties.

 Product Videos

Lower ambi mag release only
  • Lower ambi mag release only
    JL Billet Ambidextrous Bolt Release installation. Same assembl...
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 Product Reviews

  1. Extremely expensive for so many finishing issues

    Posted by Unknown on 23rd Jan 2020

    I was very excited to get one of these but that was quickly tempered by the amount of finishing work needed. For example:

    1. the 6/32 ambi bolt release holes were not threaded properly on (2) receivers.

    2. The Ambi bolt release hole for the release pin is too small and needed reaming.

    3. Select angles and curves were not finish milled and have chunks and/or rough spots instead of blending.

    4. Rear takedown set screw is small, not 6/32 which is standard on other billet lowers.

    Overall I'd say these were rushed on the mill, someone was in too much of a hurry and didn't finish them properly. The rough edges and sharp corners are fine as it needs to be tumbled prior to coating.

    Keep in mind these issues are while raw and uncoated. I will more than likely have to finish tap and ream all the holes again once it's anodized or cerakoted.

    Decent looking design but be prepared to do a final finishing pass on all the threaded screw holes with a 6/32 tap and 1/4 reamer for the takedown pin holes. It's a lot of work for a $150 receiver. These are worth about $80 retail.

  2. First billet upper

    Posted by Unknown on 2nd Jan 2017

    I have built 2 forged uppers, and wanted to give a billet a try. Very glad i did, the detail in the lower is amazing, it really complements a high end build. I would seriously recommend this to anyone who is in the market for a lower.

  3. Awesome lower, The worst coating.

    Posted by Gabe G. on 30th Nov 2016

    Awesome lower. The features are great. I havent put an upper on it so I cant say anything about the ambidextrous bolt release its shorter than any of my other lowers. Assuming it has enough leverage to not be cumbersome the fitment is great. The machining is rougher around the beavertail area than ive seen on others. The black coating is TERRIBLE, it is extreamly chaulky every time I touch it it turns white, dust embeds in it and it needs to be cleaned constantly If I had to do it over I would get the raw lower and have it coated else where. I can not stand the coating at all I bead blasted it and am waiting to hear back from two different companies to see if im going to have it anodized or cerakoted. I wouldnt have a bad thing to say if it weren't for this god aweful coating.

  4. Great innovations and changes

    Posted by Tom Comparet on 21st Sep 2016

    The JL Billlet 80% lower is in a class by itself. The features they put into their lower you will not find on many of the highest end ar production builds. Features like rear pivot pin tensioning adjustment, trigger reset takeup. And my favorite the ambidextrous bolt release. Not just the best 80% lower out there, the best lower out period

  5. So far so good

    Posted by Gary on 25th Aug 2016

    I was very happy with how fast the shipping was especially since most lower manufacturers are out of stock. I was also really happy with the finish and it looks a little unique to most other lowers. I am using an 80% Arms Easy jig and so far, there has been no problems with fit. I was a little freaked out when I finished drilling my 3/8” holes and looked into the first two and saw little pinholes going all the way through, then I realized it’s for the allen set screws for upper tension and trigger reset.
    So far I’m very happy with this lower and would recommend even though a little pricy.

  6. receiver and design excellent

    Posted by Robert on 9th Aug 2016

    I have several juggernaut lowers I bought a jl billet stock was hooked on quality . I saw the billet lowers wanted to try one it arrived today what a exceptional piece . I will buy another .

  7. Great lower and great company

    Posted by Ken B on 17th Nov 2015

    The quality and workmanship is evident when you hold and look over the lower. Much better than a basic lower and well worth the money. Plus it's a bonus when you're a veteran and can help support another veteran.

  8. Best 80 Lower you can buy

    Posted by Robot Man on 15th Oct 2015

    These lowers are tricked out with some great features, like the additional trigger adjustment for standard triggers and the pin holding the buffer spring. Nice work guys. I bought these as presents for my employees. The rest is up to them.

  9. It wasn't my first JL Billet purchase and won't be my last.

    Posted by Happy Customer! on 14th Apr 2015

    The quality and workmanship on these 80% lowers are spot on. I have completed 5 builds and just purchased 6 more. In comparison to other products on the market to include 100% lowers, if machined right these lowers run with the big dogs! If your state requires 6 month waiting periods, build your own!

  10. Best machine work I have seen to date!

    Posted by This guy! on 3rd Dec 2014

    I have not seen this quality in the 7 other manufacturers I have reviewed the lines are clear, smooth and clean the design is superb. In fact if I was not impressed so much I would not have taken the time to write this review. This is definitely a case where you get what you pay for the quality is insane. Custom BILLET Beauty! If you have thought about this don't delay help this company grow they are capable of great things in my opinion and talented in machine work as evidenced by their other areas of expertise "auto, bike, custom work" Thank you again JL for a amazing product, I will be waiting for a billet upper from you or maybe you can recommend one for its fit and finish?

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