Radical Defense MK1 Mod 1.5, PDW, SBR, 300 Blackout, 6.5″, Black, 30 Rounds

Product Description

The Radical Defense MK1 Mod 1.5 300 Blackout SBR combines compact design with serious firepower. This semi-automatic PDW features a 6.5″ barrel and ships with an integrated suppressor for hearing-safe operation. The 30-round magazine capacity provides ample ammunition for tactical situations.

Moreover, the MK1 Mod 1.5 delivers excellent performance in the proven .300 Blackout caliber. The short barrel length makes it ideal for tight spaces and vehicle storage. Additionally, the included suppressor reduces noise signature significantly, protecting your hearing at the range and in the field.

Key Features & Specifications

This Radical Defense model comes equipped with M-LOK accessory slots for customization. Iron sights are factory-installed for immediate use out of the box. Furthermore, the anodized black finish resists corrosion and provides a tactical appearance. The B5 Bravo stock ensures a comfortable, secure grip during operation.

Ideal for Hunters and Home Defenders

The MK1 Mod 1.5 excels as a hearing-safe hunting platform thanks to its suppressor integration. Therefore, shooters can practice at the range without excessive noise or hearing protection fatigue. In addition, the compact PDW design makes it excellent for home defense scenarios where space is limited.

Finally, the 30-round capacity and .300 Blackout ballistics give you confidence in any engagement distance. The Radical Defense MK1 Mod 1.5 is built for serious users who demand reliability and performance.

Ordering from Western Sport

Order online and we ship it to the licensed FFL dealer you choose near you — see how buying a gun online works. Western Sport has been a licensed FFL/SOT dealer since 2007, and everything we sell carries the full manufacturer warranty. Questions before you order? Send us a message.

Frequently Asked Questions

Q: What is the total length of the Radical Defense MK1 Mod 1.5 with the suppressor attached?

A: The 6.5″ barrel combined with the integrated suppressor creates a compact overall length suitable for PDW roles.

Q: Does the MK1 Mod 1.5 come with a suppressor, or is that sold separately?

A: The Radical Defense MK1 Mod 1.5 ships with an integrated suppressor included in the package. You will need to register the SBR with the ATF and comply with Texas suppressor laws before use.

Q: What is the process for purchasing an SBR in Texas?

A: Western Sport handles all FFL paperwork and SBR registration guidance as a licensed dealer. You must submit Form 1 to the ATF and wait for approval before taking possession. Since January 2026 the federal making tax on a short-barrelled rifle is $0. Our team will guide you through every step of the process.

Q: Is the .300 Blackout the best choice for hearing-safe hunting?

A: Yes, the .300 Blackout is ideal for hearing-safe hunting because subsonic ammunition works efficiently with integrated suppressors. The MK1 Mod 1.5 is an excellent platform for quiet, effective hunting at moderate distances.

Additional information