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  1. Hello folks, We are a new sponsor of the forum and would like to introduce our new Modulus Arms Universal AR-15 80% Lower Jig. Aside from being the only true universally compatible router based AR-15 80% lower jig on the market, we believe our jig is the easiest and most accurate jig available for finishing your lower. We accomplished this feat through decades of engineering experience. At Modulus Arms, we are a team of engineers with an AR-15 habit. Or AR-15 enthusiasts with an engineering habit, whichever way you want to look at it. Our Jig uses standardized features to center and locate the lower into our jig during the finishing process. Other jigs on the market use non-standardized dimensions to locate the lower in the jig, which can and will result in out of spec features. The Modulus Arms Jig's integrated drill guide and supplied drill depth gauge makes the drilling portion of the finishing process a breeze. With our jig, the user is required to drill far less holes which saves time and reduces the opportunity for mistakes. A common woodworking router with an end mill bit attachment is used to finish the lower with precision and accuracy. We have an entire series of instructional videos and are always available to answer any questions for our customers. On top of all that, our Universal Compatibility Guarantee instills further confidence in our customers to know that they will not be left hanging if problems arise. Please take a moment to browse our website where you will find more information and available products. Our hot seller right now is our Universal Jig + Anodized Billet 80% Lower Package which is a great deal if we can say so ourselves! Please feel free to send us a PM or email us at sales at modulusarms.com with any questions!
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