The Yankee Hill Machine Sidewinder Direct Thread Adapter (YHM part no. YHM-3251) threads onto a 1/2×28 muzzle and gives it a direct-thread mounting interface compatible with YHM’s Sidewinder suppressor system, including M2 configurations. Measuring about 5.65 inches, it’s a carbine-length adapter built for shooters who want a direct-thread connection rather than a quick-detach mount. As an ordinary mounting accessory, it’s not itself a regulated NFA item; the suppressor you thread onto it is the part requiring separate registration and transfer. It’s a straightforward way to run a YHM Sidewinder-compatible suppressor without the added bulk of a QD mounting system.

Key Specifications

• Threads onto a 1/2×28 muzzle.
• Compatible with YHM’s Sidewinder suppressor mounting system, including M2 configurations.
• Measures about 5.65 inches.
• An ordinary direct-thread mounting accessory, not itself a regulated NFA item.

Frequently Asked Questions

Is this adapter itself an NFA item? No, it’s an ordinary mounting accessory; only the suppressor you thread onto it is a regulated NFA item.

What suppressor system does this work with? YHM’s Sidewinder system, including M2 configurations.

Buy the Yankee Hill Machine Sidewinder Direct Thread Adapter

Order this Yankee Hill Machine adapter from our Class 3 parts and accessories selection for a simple direct-thread Sidewinder mount. Ships fast from our Lubbock, Texas gun shop.