Product Review: MGI Military MARCK 15
Product Review: MGI Military MARCK 15 Hydra The MARCK 15, also known as the Hydra, comes with a four-position rear stock, tactical flat-top rail, and a four-sided Picatinny-rail hand guardThere are many manufacturers offering AR-15 rifles and variants to Law Enforcement. A person can become overwhelmed when researching which AR-15 to choose or build. Many people are building a rifle by purchasing a lower receiver from different manufacturers — I am issued a Bushmaster AR-15 as a patrol rifle and routinely qualify with it. So when I recently received an MGI Military MARCK 15 Base System for testing and evaluation I thought it would be the regular AR-15. I would be thoroughly surprised and once I hefted the rifle I was impressed at its weight and balance.
The MARCK 15, also known as the Hydra, is built in the AR-15 configuration and comes with a four-position rear stock, tactical flat-top rail, and a four-sided Picatinny-rail hand guard. It is a rifle that can be changed from one to several calibers in less than two minutes.
A Modular System
This weapon system is unique because of the Quick Change Barrel (QCB). The QCB allows you to change the barrel by moving the securing block under the hand guard forward. Once the securing block is out of the way, the user moves two pins to the sides of the hand guard and the barrel slides easily slides out. To replace the barrel you just repeat the steps in reverse.
A unique feature of this weapon system is once the delta ring assembly, the barrel nut and the front hand guard retainer are removed from any standard AR-15 barrel, you can install that very barrel on the MARCK 15.
To continue the caliber change you must change the bolt carrier to the specific caliber on the upper receiver and change the magazine well on the lower receiver to the specific caliber.
To change the mag well on the lower receiver, you must clear and ensure the weapon is empty and safe. Press the detent button on the trigger guard to open the trigger guard, press the magazine release and lift it up to clear the mag well from the lower receiver. To reassemble just repeat the actions in reverse with the selected magazine caliber.
The caliber change can be completed without the use of any tools.
A Wide Variety The MARCK 15 comes as a 5.56 (.223) but is offered in several calibers including 9mm, .45 caliber, 450 Thumper and .50 Cal Beowulf to name a few.
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To replace the barrel you just repeat the steps in reverse. A unique feature of this weapon system is once the delta ring assembly, the barrel nut and the front hand guard retainer are removed from any standard AR-15 barrel, you can install that very
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I have used this vise a few times already working on my AR15 at the range and it definitely makes things a lot easier. Whether it be detailed cleaning of your weapon or building a AR15 from the ground up a vise is definitely a must have tool.
the top AR-15 manufacturers. Again, Master Gunsmith Bob Dunlap, will walk students through the entire process from building a lower receiver from scratch to installation and fitting of parts, head spacing the barrel and final assembly and tuning.
These are the same suggestions I make to my military friends who come back from deployments and are looking to build their own AR15 to have at home, and for training outside that of what they get with the military. Click the below picture to jump ahead
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