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MDX:508 U.R.G.

The MDX508 upper receiver is now available as a direct upgrade to your existing Mil-Spec lower receiver. It features an 8.5” barrel making it ideal for close-quarters situations. The included HATEBRAKE™ increases reliability and is tucked under the 9.5” handguard. These upper receiver groups ship complete, including a Maxim Defense Mil-Spec or SCW bolt carrier group, Radian Raptor charging handle, and Maxim Defense hand stop, ready to shoot right out of the box.

1. Increased reliability due to included HATEBRAKE™
2. Armorer level adjustable gas block
3. M-slot compatible handguard
4. Military-grade materials [17-4 Stainless Steel, 7075 and 6061 Aluminum]
5. HK height rail for a more rigid upper receiver
6. Installs on any Mil-Spec lower receiver
7. Comes with Mil-Spec or PDX BCG

Technical Specification

(No BCG) 3 lbs 10 oz
7.62x39 | 5.56 NATO | 300 BLK

IMPORTANT INFORMATION REGARDING SILENCERS (cans, suppressors, etc.) on any Maxim Defense firearm: CLICK HERE

Puerto Rico Customers: Consumers must go through your local PR dealer. Dealers must buy through Distribution. effective 10/03/2019

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