Buddy has a brand new M2 he just sighted in for the first time. Shoots great, ejects empty and cylces in new round, but won't fire it. Like the hammer doesn't recock during the recoil process. Can't imagine a slug not having the inertia to properly function the action here.
My brother's suggestion was to drop the trigger group, degrease everything and then oil it all back up before reinstalling.
Thoughts?