Please Welcome Modulus Arms to WeaponsForum


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Hey guys,

Modulus Arms is a company that I am proud to say that I am a part of, and I will likely be handling the forum posting on here for now.

We have an all new Universal AR-15 80% Lower Receiver Jig that we believe is the easiest and the most accurate on the market to date.

Please take a look at our website which has a lot of great information on how our jig is different, along with comprehensive instructions.

Modulus Arms




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