JK Armament PRO-KOR 556K

Sub-$1k Haynes 282 K-can with included taper mount and PEW Suppression Rating 40.4 on MK18

Affiliate links (?)

Check Best Price

View at Silencer Central

Add to Build

Quick Specs

Price: $999
Weight: 14.5 oz
Brand: JK Armament
Category: suppressor

Features

•5.56 NATO / 6mm ARC
•Haynes 282 baffle core
•PEW SR 40.4 MK18
•HUB 1.375x24 + Ti War Eagle taper mount
•14.5 oz core

Capability Boosts

Suppression+2

Mobility+1

Recommended For

Outdoor Defense+2

suppressed shooting+2

suppressed use+2

suppressor host+2

Vehicle Operations

Concealed Carry

+9 more

Compatibility Tags

family: modern-riflefamily: ar-patternsuitable-for: ultra-compactcaliber: 556caliber: 223suppressor-mount: jk-war-eaglesuppressor-interface: hub-1.375x24

Pros

+PEW SR 40.4 MK18 at sub-$1k, best price-per-suppression in the 2026 field
+3D-printed Haynes 282 baffle core with stainless and titanium mount-system components
+HUB 1.375x24 plus Ti War Eagle taper mount included
+Full-auto rated, hard-use spec
+JK 'No BS' unconditional lifetime warranty
+Garand Thumb world-record suppressor stunt put the brand on the radar

Cons

−K-can length (5.35 inches) limits maximum suppression vs full-size cans
−14.5 oz core and 18.9 oz as tested with mount system
−JK Armament is a newer suppressor entrant
−Taper mount lockup repeatability depends on consistent torque
−Boutique distribution narrows dealer access
−The 6mm-compatible bore trades a little maximum 5.56 efficiency for versatility

Detailed Specifications

Length: 5.4 inches without mount; 6.22 inches with included mount system
diameter: 1.72 inches
weight: 14.5 oz core; 18.9 oz as tested with mount system
Material: 3D-printed Haynes 282 baffle core with stainless chamber/end cap/muzzle device and titanium coupler
Mount Type: HUB 1.375x24 with Ti War Eagle taper mount included
minimumBarrelLength: None published
ratedCalibers: 5.56 NATO / .223 REM / 6mm ARC and similar .243 cartridges
soundReduction: PEW Suppression Rating 40.4 (MK18)
fullAutoRated: Yes
warranty: JK 'No BS' unconditional lifetime