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MARCK-15 Hydra® .300 Blackout Modular Rifle

AR-15 .300 Blackout

This configuration of the Hydra is set up for .300 Blackout.  It includes the MGI® Modular Lower Receiver with an AR Magazine Well, the MGI® QCB-D Upper Receiver and a 16-inch barrel with low profile gas block, bolt and the MGI® modified bolt carrier. With this base system, you can purchase and utilize the rest of ever-growing system including our various magazine wells and caliber conversions. To convert this system to another caliber, you will need to change the barrel, bolt, and magazine well to the desired caliber.  With caliber conversions already available, and many more coming into production, this weapon system continues to grow and become the most versatile Black Rifle platform the industry has ever seen.

Add a set of Diamondhead Front and Rear Diamond Polymer Sights by selecting Accessory Options above to the right!  Click picture below for more information.

All Rifles are test fired prior to packaging.

FFL is necessary to make purchase. All Federal and State Rules apply.

California, Massachusetts and New Jersey Residents are REQUIRED to select State Compliant Options.

Shipping Information:

We ship UPS Ground. All Shipping & Handling charges are applied at checkout and will vary based on weight and shipping destination.