Allen Engineering AEM4 OTB 5.56mm Suppressor - FDE

Allen Engineering AEM4 OTB 5.56mm Suppressor - FDE

Bring legendary Allen Engineering performance to short-barrel configurations with the AEM4 (Ops Inc 16th Model) Suppressor in Flat Dark Earth. Designed as a practical, short-footprint alternative to the iconic AEM5, the AEM4 retains the high-efficiency internal baffle architecture of its larger predecessor to deliver class-leading sound reduction, reduced recoil, and exceptional flash mitigation. By utilizing a shorter over-the-barrel mounting profile, it allows marksmen to run an authentic Allen Engineering reflex suppressor on carbines and rifles that traditionally lack the barrel clearance needed for the longer AEM5.

Engineered around the highly adaptable B-Mount system, the AEM4 requires just 2.05 inches from the muzzle crown to the collar taper, expanding host firearm compatibility down to 11.5-inch barrels with a Front Sight Base (FSB) or low-profile gas block. Shared mounting dimensions with the AEM2 and AEM3 make swapping across platforms seamless, while the reflex design pulls system weight rearward over the barrel to preserve firearm agility and balance. Finished in a high-temp Flat Dark Earth coating, the AEM4 is the ideal choice for shooters seeking the heritage and acoustic power of an Allen Engineering suppressor in a lighter, more compact profile.

Features

AEM5 Sound Suppression Architecture:
Shares the exact same internal baffle section as the legendary AEM5 to deliver elite sound reduction, flash suppression, and minimal backpressure.

Adaptable B-Mount Interface:
Requires only 2.05 inches from muzzle to collar taper, allowing easy swapping between AEM2, AEM3, and AEM4 setups across multiple host firearms.

Expanded Short-Barrel Compatibility:
Shorter mounting clearance allows installation on barrels as short as 11.5 inches equipped with a front sight base (FSB) or low-profile gas block.

Reflex Weight & Balance Optimization:
Over-the-barrel design shifts weight rearward toward the receiver, preserving fast-handling weapon ergonomics and trimming overall system weight compared to the AEM5.

Durable Flat Dark Earth Finish:
Armored in a tough, heat-resistant FDE finish built to withstand demanding operational schedules, hard field use, and extreme thermal cycles.

Note for Clone Builders:
While the AEM4 is ideal for compact carbine builds, those specifically looking to construct a classic Gordon Carbine clone should opt for the Allen Engineering M4-D Suppressor.

Specifications