AAC M4-2000 Silencer w/ Bushmaster ACR

After our review on the Bushmaster ACR Enhanced vs DMR we were inundated with requests for a followup shooting it suppressed.

The M4-2000 from Advanced Armament Corporation utilizes a AAC 51t Blackout Flasher for mounting and one is already standard an OEM item from Bushmaster on the ACR so it was great pairing for the followup.

The M4-2000 comes in at 6.6″ long and 1.5″ in diameter with a weight of 17.6 ounces.  A fully welded core and stainless steel and inconnel construction with a high temp cerakote finish are the high points on specifications.

With a dB reduction of 32-34dB and a full auto rating down to 10″ barrels it’s a solid contender for Rifles, Carbines and SBR’s.  While we weren’t personally able to meter this unit, it sounded good and held up well to multiple magazine strings of fire.

You can find the video review on the 13C YouTube Channel –


Specification Information

Caliber Rating 5.56mm (.223)
Color Black
Length 6.625″
Length Added 5.1″
Diameter 1.5″
Weight 17.5 oz
Finish High Temperature Cerakote™
Full-Auto Rated Full-Auto Rated
Manufacturer AAC
Minimum Barrel Length 556 10″
Build Material 316L Stainless Steel, Inconel 718


About Joe

As an Oath Keeper Joe is known for his staunch, unwavering defense of Liberty and the Constitution. His background in medicine, from the streets as a FF/EMT to a level 1 trauma team, bring a unique perspective to TBS team. As a life long firearms enthusiast you may also recognize him from his work with MAC and as founder of 13C Gun Reviews.
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