Shipping & Return Policies


Return policy: 

Modulus Arms products may be returned within 30 days for a refund as long as they are in unused condition. Products which are not made by Modulus Arms such as magazines, lower parts kits, etc. are all returnable within 7 days as long as the original packaging is unopened.

Router Jig Extreme™ Satisfaction Guarantee Policy

Satisfaction is guaranteed. We are completely confident that you will love the Router Jig Extreme. If for any reason you are not satisfied with it, you may return the Router Jig Extreme for a full refund minus shipping costs within 30 days. Just contact our customer service team for a return authorization and be sure to save the original packaging. All pieces must be returned in good condition with original packaging.

Lifetime Replacement Warranty:

Modulus Arms 80% lowers are nearly indestructible and are covered by our unconditional lifetime replacement warranty. If you somehow manage to destroy a Modulus Arms 80% lower in a way that stops it from working properly, we will replace your lower with a new one free of charge. Damage caused by milling your 80% lower out incorrectly and intentionally inflicted damage is not covered.