AMTAC SuppressorsKOA E
5.56mm / .223 suppressor · 5/8x24 Direct Thread interface · specs and compatibility from the manufacturer
Notable features
- Full-Auto Rated
- Direct Thread
length
7.7″
weight
21oz
MSRP
$1,125
length
7.7″
weight
21oz
calibers
5.56
material
Steel
interface
5/8x24 Direct Thread
MSRP
$1,125
- Overall length
- 7.7″
- Class
- 5.56mm / .223
- n
- 328
- Range
- 2.5″–9.75″
- Median
- 6.12″
- Diameter
- 1.62″
- Weight
- 21 oz
- Class
- 5.56mm / .223
- n
- 328
- Range
- 1.7 oz–27 oz
- Median
- 13 oz
- Material
- 17-4 PH Stainless Steel
- Max caliber
- 5.56mm / .223
- Base interface
- 5/8x24 Direct Thread
- Front cap
- none
- Full-auto rated
- Yes
- MSRP
- $1,125
- Class
- 5.56mm / .223
- n
- 292
- Range
- $199–$1,955
- Median
- $899
Longer than most 5.56mm / .223 suppressors
Length compared against the 328 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 328 5.56mm / .223 suppressors in the catalog that publish one. Quartile basis; a value inside the middle half carries no note.
Pricier than most 5.56mm / .223 suppressors
MSRP compared against the 292 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: 5/8x24 Direct Thread. It threads straight onto the barrel, so no mount or muzzle device is involved.
Manufacturer claim
- AMTAC states its suppressors are full-auto rated.
- The AMTAC uniBaffle design continues to add velocity while the bullet travels through the suppressor, which AMTAC calls suppressor push and says leads to a higher muzzle velocity and flatter trajectory for long-range shooting. As the bullet passes through the uniBaffle, the air around it loses pressure gradually instead of all at once, which AMTAC says reduces the standard deviation of muzzle velocity by up to 20% and results in tighter groups and a smaller vertical spread on long-range targets.
- KOA E: Length 7.7", Over-Barrel Length N/A, Diameter 1.62", Weight 21oz, Thread 1/2 x 28, Suppression Up to 28dB.
- AMTAC Suppressors are made using materials of the highest quality and machined to exacting tolerances in the USA. They are designed to provide reliable service for tens of thousands of rounds, and come with a limited lifetime warranty.
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- The KOA E (KOA Endmount) offers the same direct-thread attachment as the other models and is a great choice when your rifle system does not allow for an over-barrel suppressor.
- KOA E End Mount - No Over Barrel Chamber.
- AMTAC: at this time, we do not recommend using our 556 suppressors on .22 rimfire rifles.