This Hammer from Zenith Firearms is a direct-fit, semi-automatic-only fire control part sized for Zenith’s MKE-manufactured firearms line. The hammer is released by the trigger and, in turn, strikes the firing pin to fire one round per trigger pull, making it one of the core parts of the fire control group.

Key Specifications

• Functions as the hammer, struck forward by the trigger’s release to strike the firing pin and fire one round per pull.
• Built as a standard semi-automatic fire control part.
• Sized as a direct-fit part for MKE-manufactured Zenith firearms.
• Sold individually as a single replacement part.
• Sold as a small-parts kit, not a complete firearm — it’s classified as a firearm accessory, so no FFL transfer is required to buy it.

Frequently Asked Questions

What does the hammer do? It’s released by the trigger and strikes the firing pin, firing one round per trigger pull.

Will this fit my Zenith firearm? It’s sized as a direct-fit replacement for Zenith’s MKE-manufactured firearms line.

Buy the MKE Semi-Automatic Hammer

Replace a worn semi-automatic hammer with this direct-fit part from Zenith. It ships fast from our Lubbock, Texas gun shop, and our other gun accessories & parts selection has more parts.