JK Armament JK155 Booster/3 Lug Adapter 1.125x28 Black Hard Anodized Aluminum

The JK Armament JK155 Booster/3 Lug Adapter gives owners of the JK 155 series of silencers a versatile mounting solution in one compact component. This adapter drops into the rear of a JK 155 can in place of a fixed direct-thread mount, providing both a pistol booster assembly interface for 9mm pistols that need unlocking for reliable semi-auto cycling and a 3-lug quick-detach interface for PCCs, subguns, and other 3-lug hosts, so a single suppressor can move between platforms without buying multiple dedicated mounts.

The adapter is machined from 7075 billet aluminum and finished in Type III hardcoat anodize for strength, wear resistance, and corrosion protection. It carries 1.125x28 internal threads to accept common pistol booster assemblies and measures 1.55" in diameter. A black plastic threaded knob with a six-lobed star grip allows tool-free hand installation and removal. The lightweight aluminum build keeps added mass low while maintaining a secure, repeatable lock-up between the suppressor and host.

Designed and manufactured by JK Armament as part of the JK 155 accessory ecosystem, the JK155 Booster/3 Lug Adapter is a straightforward, purpose-built upgrade for shooters who run their JK 155 across both booster-equipped pistols and 3-lug PCC or subgun hosts.