Abstract: A fore chamber assembly of a nailing gun serially feeds nails by gravity through a channel into a firing chamber. A nail head fence prevents the heads of trailing nails from underriding the heads of preceding nails and getting more than one nail in the firing chamber. The fence is vertically adjustable to work on different thickness nail heads. A safety link prevents firing of the gun unless the gun abuts the structure to be nailed and in that attitude applies a friction lock to nails in the fore chamber to prevent kickback of these nails upon gun firing. This lock is through a sliding cam and lever that engages a resilient button that in turn engages some of the nails. A feed magazine has spaced rails defining a slot that accepts loose nails in any orientation so long as their heads are on the rails with the nail shanks in the slot. The magazine rails are secured together by a cover that overlies the slot and nail heads and depending flanges that attach to the rails.

Abstract: A magazine of a nailer gun organizes nails with the head of each nail in sliding contact with parallel support rails and the point of each nail on a support track that parallels the rails. The rails and track orient the nails so that they are parallel to each other and at an acute angle to the perpendicular between the rails and track. In this orientation the head of each nail overlaps the head of the nail preceding it and contacts the shaft of the nail following it. At a driver head of the gun, the distance between the point support track and the rails lengthens and the nails rotate for alignment with the axis of a chamber of the driver head. Upon reaching the chamber, each nail drops a short distance onto a dog and is retained in place by the dog. A driver of the gun impacts the nail in the chamber and drives it. The dog swings out of the way in response to the impact of the driver. A nail guide rotates and slides away from the chamber upon being engaged by a bent nail.