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NEW!! James Madison Tactical .308 80% Polymer Lower and Jig

Posted on July 24th, 2015 by ar15news

I first wrote about James Madison Tactical nearly two years ago when I was able to help introduce their new 80% AR-15 lower receiver. Since then I have had countless friends build AR-15 rifles off of JMT 80% polymer lowers with great success and zero issues. Once people started to see how easy it was to machine the JMT lower they started pretty much demanding that JMT offer a .308 (AR-10) lower. James Madison Tactical listened to their customer base and decided to move forward with developing a .308 lower. A few days ago I received a package from James Madison Tactical. On the outside it had their logo with the title “308 Equalizer”. 

JMT 308 80percent Lower 1

All James Madison Tactical lowers come with their own machining jig so of course inside the box I found…you guessed, a machining jig. The JMT machining jig has a 3-piece construction and is made of a rigid plastic that could probably be used more than once but all JMT lowers come with a new jig so you’ll probably never have to use it again. 

JMT 308 80percent Lower 1

What I was more interested in seeing was the lower itself. I have handled a few JMT AR-15 80% lowers before and they are nice so I was curious to see if the fit and finish on the .308 receiver was as nice. Maybe its just me but I think the finish on the .308 is the best they’ve produced yet which is pretty impressive. The webbing on the mag well looks great and the flare on the mag well is not just a sharp line but is actually curved out.

JMT 308 80percent Lower 1

JMT 308 80percent Lower 1

A couple of feature that I was happy to see carried over from the AR-15 lower are the aggressive texture on the front of the mag well which can be used as a support hand grip and they also used the threaded brass insert for the pistol grip screw so you can really tighten the grip screw down without stripping the threads. They also reinforced key areas of the lower so you don’t have to worry about them breaking like other less desirable poly lowers do.

JMT 308 80percent Lower 1

JMT 308 80percent Lower 1

Basically, as you can see, the 80% lower just needs to have the Fire Control Pocket machined as well as drill holes for the Safety Selector, Trigger Pin and Hammer Pin. That is where the supplied jig comes in handy. It has all of the holes in specific places to make sure you don’t screw it up. JMT has great machining instructions showing exactly how to machine their 80% lowers which is a great tool. It also shows you all of the tools you’ll need as well.

JMT 308 80percent Lower 1

JMT 308 80percent Lower 1

Over the next few weeks I plan on machining this James Madison Tactical .308 80% lower receiver, assembling it and getting it out to the range. I already have a few nicely running .308 uppers that I built so I will be able to quickly see how well the JMT .308 80% lower does with them and report back to you guys with more info after some range time.

JMT 308 80percent Lower 1

This could be a great start to a new .308 build for you and a nice way to reduce some of the added weight these big bore rifles bring with them. The James Madison Tactical .308 80% Polymer Lower Receivers are now available for purchase at for an intro price of just $124.95 including the machining jig. 

James Madison Tactical Memorial Day Sale

Posted on May 23rd, 2015 by ar15news

If you’re looking for an easy way to get in on the 80% Lower Receiver game, James Madison Tactical is a great place to start. They sell a really nice composite polymer 80% Lower Receiver that includes a machining jig as well. Normal sale price is just $99.95 but you can save 10% this Memorial Day weekend by using the discount code “MEM2015” at checkout.

James Madison Tactical Memorial Day Sale


Posted on October 17th, 2014 by ar15news

Everybody loves a chance to win something free! I happened to run across a post on the James Madison Tactical Facebook page showing that right now JMT is giving away 10 of their new Gen2 80% Lowers. You basically have to own and have finished one of their Gen1 or Gen2 80% lowers and make a video of it. Obviously the more creative you are the better your chance of catching their attention and winning another JMT lower. Read below for more information on this giveaway. 

JMT Gen2 Lower Giveaway

Be sure to follow James Madison Tactical on Facebook and visit their website at

James Madison Tactical receives ATF/FTB Determination letter

Posted on September 11th, 2014 by ar15news

(Richland, WA) James Madison Tactical LLC, manufacturer of the finest AR-15 polymer 80% lower receiver on the market today, has received the important ATF/FTB determination letter stating that the JMT80 AR-15 polymer 80% lower receiver is NOT classified as a firearm as defined in 18 U.S.C. 921(a)(3) and complies with the Gun Control Act of 1968.

James Madison Tactical customers, past and future, can own a JMT80 AR-15 80% lower receiver with confidence. AR-15 enthusiasts are encouraged to ask their supplier for a copy of their manufacturer’s ATF/FTB determination letter before making their next AR-15 80% lower receiver purchase.

James Madison Tactical Gen 2 Polymer Lower

To view the James Madison Tactical ATF/FTB determination letter visit

James Madison Tactical Contact Information: Dan Hanchette,, 509-392-7500.

NEW!! James Madison Tactical Gen 2 Polymer/Composite Lower

Posted on July 7th, 2014 by ar15news

James Madison Tactical has made a great name for themselves in the 80% Polymer/Composite AR Lower market by making what I would say is the best 80% Polymer / Composite lower out there. They went to great lengths to strengthen the necessary areas that have been failure points on other polymer lowers in the past but the material itself also makes a huge different. The guys at JMT have spent most of their career manufacturing amazing $1,000,000 kit Jet planes called the ViperJet that you can build at home. They then took their expertise in AERO Space polymers that are strong enough to be used in airplanes and used that same material to build a high quality, reinforced AR15 80% lower. The Gen 1 lowers were fantastic but now JMT has upped their game with the Gen 2 lower adding lots of enhancements.

Some of the enhancements are to further strengthen the design but a couple are cosmetic and they look awesome. One such upgrade is the webbing pattern on the magwell that is reminiscent of the PMAG design. The other is they removed the large “JMT” logo from the side of the magwell and replaced it with a much smaller logo on the Pivot Pin Spring Housing.  Oh yeah, the machining jig you need to complete the lower comes FREE with the purchase every lower and the price is just $99.95 each. Take a few minutes to read the official press release below and check out the pics of the new lower. Purchase links are at the bottom.


James Madison Tactical (JMT) introduces the superior Gen 2 polymer/composite fiber
lower receiver for the AR-15 platform.

James Madison Tactical, llc introduces our superior Gen 2 Polymer / Composite AR-15 lower receiver. JMT has made the best even better, known for their high quality and rugged 80% receiver. As we know JMT has incorporated new material technology and manufacturing processes for enhanced durability, strength and reliability but we have added a few more upgrades making it the best Polymer / Composite lower on the market today.

JMT Polymer Lower Gen2 1

GEN 2 Enhancements:

1. Extended box sections on upper fire control pocket.
2. Box section on upper top left of magazine well.
3. Extended bolt release pin posts.
4. Magazine webbed pattern.
5. New GEN 2 logo placement.

The JMT 80% lower also comes with a specially designed 3-piece machining jig with every order. This allows the user to machine the JMT 80% polymer/composite fiber lower receiver with ease and precision using simple tools.

The first thing users will notice is the JMT 80% lower receiver looks beefed up from the outside and rightly so. JMT has managed to add even more enhancements to the already strong making it even stronger. JMT also offers 3 popular colors (Black, FDE and ODG).

JMT Polymer Lower Gen2 3

You can purchase the new Gen 2 JMT 80% lowers directly from or from many of your usual favorite retailers such as, etc. 

New Lower Pricing!! James Madison Tactical 80% Lower with Jig

Posted on October 28th, 2013 by ar15news

Last month we helped introduce you guys to the brand new James Madison Tactical 80% carbon/composite lower receiver. There were a few things that really set this 80% lower apart from other non-aluminum 80% lowers such as the fact that all of the JMT lowers come with a FREE machining jig, the JMT lower has a threaded metal insert for the grip screw, the quality materials and reinforced areas on the lower, etc. Up until now, the JMT lower and Jig retailed for about $150 but the guys at James Madison Tactical weren’t satisfied with that. They want to make sure anyone can afford this lower and wouldn’t have any reason to not choose JMT. They’ve spent the last week or so working out a deal to purchase a massive amount of material thus giving them a lower cost that they can then pass on to their customers. Effective immediately, the James Madison Tactical 80% carbon/composite lower receiver including the Jig will be just $99.95. These lowers are seriously awesome. Check out the pictures below, then head on over to to purchase yours.

620 James Madison Tactical 80 poly lower


620 James Madison Tactical 80 poly lower


620 James Madison Tactical 80 poly lower

Here’s the announcement from JMT:

Breaking News! James Madison tactical LLC has just secured a manufacturing contract that enables us to manufacture in higher volume at an extreme savings to you our valued customer starting Monday October 28th 12:00 AM PST you’ll be able to purchase at the same high quality JMT 80 carbon/composite lower receiver and machining fixture which is included with every sale for the AR15 all for only $99.95. Hurry while supplies last.

NEW!! James Madison Tactical 80% Polymer Lower and Jig

Posted on September 16th, 2013 by ar15news

The other day I received a call from the guys over at James Madison Tactical. At the time I really had no idea what products they offered or had even heard of them. That makes perfect sense as they’ve spent most of their career building amazing $1,000,000 kit Jet planes called the ViperJet that you can build at home. Recently they realized their expertise in AERO Space polymers that are strong enough to be used in airplanes could also be used to build a high quality, reinforced AR15 80% lower that actually looks and performs like a lower you might want to own. And FYI, the jig comes FREE with the purchase of a lower.

Basically what they’ve designed is a lightweight polymer AR15 80% lower that is more of a hybrid as it is made from a blend of polymer and fibers. Its been reinforced in multiple areas including around the buffer tube assembly area to address issues seen in other polymer lowers. This lower actually looks more like a nice billet lower. It has a flared magwell with grip serrations on the front and an integrated winter trigger guard. From what I’ve been told they have put thousands of rounds through these lowers with zero issues. Each lower also comes with a Limited Lifetime Warranty too.

620 JMT 80 percent lower 1

620 JMT 80 percent lower 1

One of the things that keep most people from doing 80% lowers is the combination of the cost and that you need to buy a machining jig separately. Obviously some of us realize it has nothing to do with money but is all about creating your own unregistered lower. Well JMT understood that people didn’t want to purchase a lower and then have to buy a jig too and decided to include a reusable jig with each 80% lower. You can check out pictures of the jig below.

JMT 80 percent lower and jig 1

JMT 80 percent lower and jig 1

JMT 80 percent lower and jig 1

In short, this is the first Polymer AR15 lower that has had interested me even one bit. Most of the ones I’ve seen in the past look like something my neighbor could have made in his garage with a waffle maker. I don’t own any Polymer lowers yet but if I do this will most likely be the one I would go with. Another cool thing is that James Madison Tactical is in the process of securing their FFL so they can produce 100% machined lowers but for now you’ll just have to finish them yourselves. Check out the short video below and then head on over to to check out what they have to offer.  



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