Allen EngineeringAEM4
5.56mm / .223 suppressor · OPS/AE B-Mount interface · specs and compatibility from the manufacturer
Notable features
- TBAC Summit Tested
length
8.4″
weight
19.4oz
MSRP
$850
length
8.4″
weight
19.4oz
calibers
5.56
material
Steel
interface
OPS/AE B-Mount
MSRP
$850
- Overall length
- 8.4″
- Class
- 5.56mm / .223
- n
- 373
- Range
- 2.5″–9.75″
- Median
- 6.2″
- Diameter
- 1.5″
- Weight
- 19.4 oz
- Class
- 5.56mm / .223
- n
- 370
- Range
- 3.2 oz–28 oz
- Median
- 13.35 oz
- Material
- Stainless Steel
- Max caliber
- 5.56mm / .223
- Base interface
- OPS/AE B-Mount
- Front cap
- none
- Barrel restriction
- 11.5" minimum
- MSRP
- $850
Longer than most 5.56mm / .223 suppressors
Length compared against the 373 5.56mm / .223 suppressors in the catalog that publish one. Quartile basis; a value inside the middle half carries no note.
Heavier than most 5.56mm / .223 suppressors
Weight compared against the 370 5.56mm / .223 suppressors in the catalog that publish one. Quartile basis; a value inside the middle half carries no note.
Prices are manufacturer's suggested retail (MSRP). What you pay may differ.
Mount interface: OPS/AE B-Mount. Nothing in the catalog attaches to it yet; check with the manufacturer for the hardware it takes.
The Thunder Beast Silencer Summit fires every suppressor entered on the same gun, with the same equipment. AEM4 was measured in 3 tests. Figures can only be compared with others from the same test, so each one links to everything else fired on that gun.
Gas-operated rifles and carbines
- 5.56, 10.3" AR (MK18) 2023138.5 dBat the ear · 23.0 dB quieter than unsuppressed80 tested →
- 5.56, 11.5" AR-15 2024142.7 dBat the ear3 tested
- 5.56, 14.5" AR-15 2024140.7 dBat the ear2 tested
Measurements published by Thunder Beast Arms Corp. How to read these
Manufacturer claim
- The AEM4 features the same baffle section as the AEM5, so sound suppression is similar, while using a shorter B-Mount mounting length that enables compatibility with smaller barrels than the longer AEM5. AEM2, AEM3, and AEM4 share the B-Mount style, which requires 2.05″ from the muzzle to the taper for proper mounting.