80 Polymer Lower

80 Lower Receiver For Sale by JMT

The new 80 polymer lower receiver for your AR-15 platform is engineered and manufactured by James Madison Tactical in the USA.

This is not your average 80 lower receiver, in fact, our AR-15 lower receiver is fully engineered using current finite element structural analysis for reliable, long-term high performance.

Polymer 80 vs. Aluminum

After much research in polymer 80 lower receivers, James Madison Tactical has created its own formula of hybrid polymers and fibers with additional reinforcements in high stress areas to bring you the best AR-15 lower receiver on the market today.

All of our 80 lower receivers are engineered to Mil Spec tolerances and because it is fashioned from extremely durable fiber polymer materials there are no concerns about corrosion as you may find in aluminum AR-15 lower receivers.



In Field Durability

JMT uses only the best high quality hybrid fiber/polymer materials, advanced engineering, precision manufacturing and stringent quality controls.  This way you can trust it not only in the harshest field environments but for personal protection as well.

Parts Interchangeability

The Polymer AR-15 80% lower receiver by James Madison Tactical is designed specifically to Mil Spec tolerances for a high level of interchangeability with other Mil Spec AR-15 parts and accessories on the market today.  This is achieved through current technology and computer aided manufacturing processes combined with exacting quality control procedures.



Our commitment is to your satisfaction.

See our 80 lower receiver Limited Lifetime Warranty for the Polymer 80 by JMT.

Personal Defense and Protection

How you decide to defend and protect yourself and your family is a personal matter.  No one wishes to experience a personal breach of your safety or a home invasion but it does happen.  Our mission at JMT is to give you the assurance in a product you can trust.