DCOA stands for Disassembly, Clean, Oil (lubricate) and Assembly. Every gun that comes into the shop
DCOA (except maybe brand new guns for scopes and trigger jobs) gets a full. That means the gun is
disassembled down to just parts, detent balls, springs, and pins. While doing a DCOA, I can determine
the condition of the gun and what its problems may be. Included in these type inspections are head
spacing, loading, feeding, chambering, firing, extraction and ejection. The magazines of these guns must
properly allow the next round to slide rearward in the tube. The safety of the gun is paramount. The gun
must be safe before I return it to you.

Pump shotguns need the action arms checked for bolt operation and slam firing. Semi-autos need
proper gas venting or spring assembly for operation with desired load type. Double guns need to be
checked for slam firing, proper extraction and/or ejection. They must be fitted to the individual gun.
Some of this work will probably require the gun to be re-blued if it is not stainless.

Double guns with one trigger need the recoil operated trigger selector to have the proper tension.
Shotguns need to be fitted for the individual who is using the gun. With only a front sight and the eye for
the rear sight, the cast-off or on and the cheek contact must fit the shooter.

Stock work on a shotgun can include checkering, changing the pitch and offset as well as overall gun fit
to the individual. Recoil reducing cylinders (dead mules) can be installed. Butt pads can be changed for
longer or shorter length of pull and new butt pads can reduce the felt recoil.

Special sights (glow in the dark, scopes, extra beads on the rib, or rifle) can be installed to fit your
needs. AND of course, detailed cleaning plus polishing of needed parts and test firing is always done
before the gun is returned to you.