I really like the GROZ hammer heads more than the Wilson ones. This is my second Groz 14lb rifle among many others. This one bent right under the head pretty quickly. I suspect someone had an overstrike. It happens. It still works well because it's only slightly bent. I'm obsessed with Wilson's hammer heads coming off the bolts! Both brands have their strengths, but GROZ is definitely the preferred one for me and mine. Break, break, break!