Engineering & Technical Division

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Magpul-maximized carbine delivers tactical performance for survival on the street!


The author took the excellent 9mm M4-LE from CMMG and enhanced it to the next level with a full complement of Magpul gear. Perfect for LE requirements in any environment (left), the use of 9mm allows for ammunition compatibility when transitioning between carbine and handgun.



To ensure proper fit and flawless functioning, the 9mm M4-LE’s lower receiver features a dedicated “filled” mag well.


If you like to shoot, to actually press the trigger versus standing around talking, any time you can save money on ammunition is a good time. Question: Why are we talking about .223 and 9mm ammunition in the same paragraph? Answer: They are both cartridges chambered in modern Stoner-based carbines.



A straight blowback system of operation is employed, with a bolt carrier assembly featuring greater mass than that of a .223 AR.


There have been AR-carbines chambering the 9mm cartridge for better than 20 years now. I can recall the great fervor that surrounded the Colt CAR-15 in 9mm when it was first released. I was only 19 years old when my local gun shop received a 9mm CAR-15 and hung it up on the wall.

By Paul Markel, Images by Steve Woods




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