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How-To’s, Product Reviews, and more!

Posted by Modulus Arms Product Team on 30th May 2026

Polymer80 Jig Tool Set and Accessories

Polymer80 Jig Tool Set and Accessories Modulus Arms has been a leader in 80 lower jig development and router-based tooling since 2014. The Polymer80 jig tool set is a pistol-frame accessory category s …

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Posted by Modulus Arms Product Team on 11th May 2026

How to Read Compatibility Notes Before Purchasing

How to Read Compatibility Notes Before Purchasing Modulus Arms has been a leader in 80 lower jig development and router-based tooling since 2014. An 80 lower compatibility guide should teach buyers ho …

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Posted by Modulus Arms Product Team on 4th May 2026

Easy Jig Gen 4 Feature Categories

Easy Jig Gen 4 Feature Categories Modulus Arms has been a leader in 80 lower jig development and router-based tooling since 2014. Easy Jig Gen 4 is the current-generation multi-platform router jig fro …

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Posted by Modulus Arms Product Team on 30th Apr 2026

Router Jig Pro Feature Categories

Router Jig Pro Feature Categories Modulus Arms has been a leader in 80 lower jig development and router-based tooling since 2014. Router Jig Pro is a multi-platform router jig product family sold thro …

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