$49.95 - $159.95
Calculated at Checkout


The SI JCOMP Gen2 is the classic Type 89 compensator re-engineered and updated for the 21st century.  Due to end user feedback, the favorite features of the original are retained, but the J Comp now features increased muzzle rise compensation, and is available in 7.62x39mm and .308/7.62x51mm in addition to 5.56x45/.223. Now also compatible with Oppressor and FerFrans concussion reduction devices.

The J-COMP concept comes from the Type 89 Japanese assault rifle used by the Japan Self-Defense Forces, the Japan Coast Guard's Special Security Team units, and the Special Assault Team.


The Strike Industries Oppressor represents the next evolution in concussion reduction devices.  Typical concussion reduction devices simply sleeve the brake, with a simple open end to redirect gasses. The OPPRESSOR is compatible with the SI muzzle devices to include: Venom-FH, Checkmate Comp, King Comp, MK-9 Comp, J-Comp Gen2, Sierra Comp, and Triple Crown Comp. While this does accomplish reducing side concussion, braking performance becomes reduced as well.   Designed with computer aided flow dynamics, the SI Oppressor provides a no compromise solution for redirecting the overpressure produced by aggressive brakes and compensators.  Advanced internal geometry actively draws the gasses out and thrusts the gasses forward through vents to accomplish linear braking in order to retain more braking efficiency.  Using a proprietary quick detach mounting system, the Oppressor can be rapidly installed before transitioning to prone shooting positions, or for indoor use.

for .223/5.56
-Length: 2.55"
-Weight: 3.6 oz
-Diameter (OD): 0.87"
-Diameter (ID): 0.26"
-Thread Pitch: 1/2-28
-Caliber: .223/5.56

for .308/7.62/300 BLK
-Length: 2.55"
-Weight: 3.6 oz
-Diameter (OD): 0.87"
-Diameter (ID): 0.34"
-Thread Pitch: 5/8-24
-Caliber: .308/7.62

Related Products