- The adjustable stock allows overall length to be from 36.5 inches to 32.5 inches (collapsed).
- A Stark SE-1 pistol grip adds comfort and controllability, but the author found its flared backstrap made actuating the safety lever with the strong hand difficult.
- Operation of the MMR is standard for the AR-15, including employing a traditional charging handle.
- The MMR comes with a standard, A2-style flash hider attached to its threaded muzzle.
- With a quad-rail handguard surrounding its free-floated barrel, the MMR provides both great versatility and fine accuracy.
- Though it has a dustcover, the MMR lacks a forward assist. Still, it experienced no failures in testing, rendering the latter issue moot.
- Mossberg’s first venture into the AR-15 market, the MMR is a solid platform at a price sure to entice many modern shooters. With a host of desirable features from muzzle to buttstock, it immediately puts the company on the AR map.
- Mossberg’s first venture into the AR-15 market, the MMR is a solid platform at a price sure to entice many modern shooters. With a host of desirable features from muzzle to buttstock, it immediately puts the company on the AR map.
- A removable rear sight ships with the MMR and mounts to the top rail. It is adjustable for both windage and elevation.
- The MMR’s front sight is also removable via a thumbscrew, making it easy to mount traditional riflescopes.
- Made from plastic-mold steel and electric-furnace melted, the MMR’s bolt is a solid, durable piece.
- Overall weight of the MMR is 7 pounds, 8 ounces.















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