Defiance HPS 4GSK Cal .45ACP

High Precision Silencers for KRISS Vector family



The Defiance HPS 4GSK Cal .45ACP has been carefully engineered to deliver outstanding durability, accuracy, and sound reduction. The HPS is constructed of T6 Aluminum with a Type III Mil-Spec Black Hard Anodized coating and tool steel with a QPQ coating at the threaded end, giving it a tough, scratch-resistant layer that also prevents corrosion.The HPS incorporates an internal baffle system which is CNC machined from high grade aluminum and steel alloys and consists of two steel and three aluminum baffles strategically stacked to minimize sound and maximize suppressor service life. Defiance suppressors are proudly distributed by KRISS USA, Inc.

The Defiance HPS 4GSK Cal .45ACP is designed for use with the KRISS Vector family of firearms and is compatible with all M16x1 LH threaded, .45ACP models (SMG, SBR, and SDP).

Defiance suppressors are hearing safe and reduce sound levels below OSHA and MIL-STD- 1474D standards for use of hearing protection. Levels of suppression may vary depending on the type of ammunition used.

Please inquire with your local Class 3 dealer for ordering information

MSRP $795
Buy Now!


Tech Specs

FeatureTechnical SpecificationsDetails
Caliber .45 ACP  
Dim. / Wt Length:
1.79 "
1.1 lbs
Construction Aluminum & Steel Alloy  
Barrel Threading M16x1 Left Hand  
Color Matte black anodized Mil-Spec Type III (US model)

Attention: Installation of Kriss Vector Surefire Light Adaptor and Light will prohibit installation of the Defiance 4GSK Suppressor onto the Kriss Vector.