Defiance HPS 4GSK Suppressor (.45ACP)

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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.

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.


Additional Information
Manufacturer Defiance
Model HPS 4GSK
Type Suppressor (Full Auto Rated)
Caliber .45ACP
Weight 1.1 lbs
Length 7.7″ (Diameter: 1.8″)
Finish Type III Mil-spec black anodized coating
Mount Direct Thread
Sound Reduction Sound reduced below OSHA Standards

Additional Information Content

Modern Warriors

We started Modern Warriors and Alice Firearms for the sole purpose of providing a less expensive way to enjoy our love of buying and shooting some really cool stuff. What started as a hobby has turned into a business where we have developed the experience and ability to help you enjoy our same hobby and save you money in the process.

We specialize in tactical weapons, including suppressors, short barrel rifles and full auto weapons. We have routine experience in shooting the weapons we carry, so if you want our opinion on how a weapon operates, we will gladly provide it. We also have expertise working with licensed professionals in setting up gun trusts, which is an ideal way of purchasing, owning and operating any weapon restricted by the National Firearm Act. Don’t let the word “trust” scare you. It is very easy to set one up if you have the right help.

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