*Estimated Shipping: Fourth Quarter 2020*
**PLEASE READ FOR PURCHASES: You will not be charged until this pre-order item ships. When placing your order for this pre-order item do not have anything else in your cart. If you wish to purchase in-stock items as well, please do separate transactions. Any orders received with pre-order items AND normal stocking items will be cancelled and refunded. We are sorry for the inconvenience. 

The PDX redefined compact firepower in terms of size, durability, and accuracy. The next size up in the MDX family is the 508. With the same heart and soul of the proven PDX, the 508 features an 8.5” barrel, ideal for when maximum concealment and compactness are important, but not as crucial.

The 8.5” barrel delivers higher velocities while the SCW stock or brace plays a key role in the compact size. The SCW system adds a mere 4” to the end of the receiver with a full extension of 8.75”, providing complete comfort to the operator. Our proprietary bolt carrier group and buffer & spring options ensure extreme durability and smooth cycling.

Our MDX series firearms are also equipped with the Maxim’s HATEBRAKE muzzle booster. This patent-pending device significantly reduces recoil, decreases the flash signature, pushes gasses and concussion waves downrange away from the operator, and improves overall performance


Calibers: 5.56 NATO, 300 BLK, 7.62x39mm
Barrel length: 8.5”Overall length: 21.5” – 23” (collapsed)
Configurations: SCW Pistol, SCW SBR, CQB Pistol, CQB SBR

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

Magazines: Each MDX508 ships with one 20rd magazine.

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


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