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Multi-Platform Jigs for AR-15, AR-9, AR-45, and .308 Modulus Arms has been a leader in 80 lower jig development and router-based tooling since 2014. A multi platform 80 lower jig is a fixture product …

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80 Lower Jig for AR-15: Compatibility Terms Modulus Arms has been a leader in 80 lower jig development and router-based tooling since 2014. When you search for an AR15 80 lower jig, you're usually loo …

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The All-New Modulus Arms Heavy-Duty AR-15 80% Jig has been shipping for a little over a month and the reviews are starting to flow online. www.80percents.com has done reviews on our original …

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Modulus Arms is proud to present the Heavy-Duty Universal AR-15 80% Jig. This Jig is the answer to all the feedback that the customers have asked for. We have incorporated all the things we have …

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