Michael M. Kokolus Custom Gun Stock Duplication

Duplication Details

Stock Duplication: To take a pattern stock, trace it with a pantograph, and at the same time, cut a duplicate stock from a raw blank.

Combining our experience with fine machinery we can hold close tolerances. This applies to most stock designs. Patterns (i.e.. the tracing stock) that are sent to us by customers, which have been fitted to that particular rifle or shotgun to be re-stocked, will take minimal work to fit and finish unlike a 95% - 98% semi-inletted stock.

One-on-one stock duplicating is intended for gunsmiths, stock makers and hobbyists who are looking for more than just a semi-inletted stock. This is a service where a customer can modify their stock to a pattern that can be traced into virtually any custom feature or style. Modifications can be done with fiberglass, bondo, plastic wood, etc. Any mistakes can be corrected to the pattern by just shaping, taking off or just adding more bondo rather than doing these changes to the "real stock". We can duplicate stocks that are no longer available, whether it be an inexpensive .22 caliber, an expensive drillings stock, or a stock with custom added features. Our company does a considerable amount of reproduction for collectors.

How well the duplicated stock will fit your barreled action is determined by these factors:

  • Was the pattern stock fitted and modified to your metalwork?
  • The size of the cutters versus the stylist (tracer).
  • The play in the cutting motor and also the overall condition of the machine.
    • The sharpness of the cutters.
    • Vibrations (long stocks are more vulnerable to this).
    • The quality of the machine.
    • The experience of the operator.

The operator must use his stock making experience of both fitting and finishing. Hand-fitting (inletting) experience is very important in stock duplicating. The operator must know the points that need extra detail.

We suggest that anyone who decides to stock a rifle or shotgun know the proper fit of wood to metal. Wherever wood meets metal on the outside we like to leave some wood in excess over the metal, that way there is room for error in fitting. The exterior visible part of the stock will be approximately .019 to .015 over, and will have to be filed or sanded with rough sandpaper. For those of you who are interested in a smooth finish, please don't be disappointed. Would you rather have to sand off a little roughness or spend countless hours filing and fitting a smooth semi-inletted stock?

Any repairs or defects of the pattern will need to be corrected before duplicating either by the customer or by us. We can only duplicate what we are duplicating from. Any modifications needed for changes of the pattern will result in an extra charge. Some examples include L.O.P., adding a check piece or a wider forearm, etc.

When a customer sends us their wood, we will need it at least 1/2 inch over the size of the pattern stock.

Please feel free to mark where you would like your finished stock to be located on the blank, but do not band saw it out. Some of our customers send us a band sawed, outlined blank with a Monte Carlo, but want to use our pattern with a straight stock. If you put one on top of the other, you will see this won't work. We cannot grow wood on your blank.

We will not be held responsible for hidden defects in customers' wood, however; we will stop machining at that point and contact the customer to see what they would like to do. The customer is liable for set-up and machining up to that point.

Thirty percent of the duplication process is setting up the work pieces.

Mannlicher and two piece stocks need more set-up and duplicating time, therefore; the cost is more for these types of stocks. Any stock that would bend under pressure from front to rear or forearm to butt are also subject to an extra charge. There are some one piece bolt action rifles with short lengths that fall into this category. Please feel free to call us with any questions - 814-349-2403.

We also do most two piece stocks and forearms. A minute part of the inletting could be restricted from being cut by the way the stock is held in the machine. In order to hold the stock in the machine, blocks of wood must be glued to the front and sometimes to the rear of the stock, which can prohibit that part of the inletting from being cut. The inletting that can be cut will be at close tolerances.

If you are sending us a pattern, it will need to be prepared for set-up by gluing those blocks of wood we just talked about. These blocks are easily removed by heating the glue with a heat gun. This will remove the finish from the pattern stock. Also, the pattern will probably receive some superficial scratches while being traced. This is mentioned, because some of our customers send us borrowed patterns that are not to be marred.

We also sell certain bolt action riflestocks that are pre-fitted and ready, to finish the exterior. Please call for pricing and availability as we are always adding to our product line. Most of our patterns have been fitted to barreled actions and will require very little fitting. You won't have to remove a large amount of wood on the exterior, just smooth it out. We have a well designed classic pattern that we have incorporated into many models such as the Mauser, M-70, Sako, Howa, Remington 700, etc. There are approximately 1200 patterns available to our customers, including classic, modern sporters, military, thumbholes, heavy target, etc.

Duplicating gun stocks

Stock from a blank

Mid machining process

Finished stock

finished stock

bolt action finished stock

Gun stocks


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Custom Rifle Stocks · Aaronsburg, PA · 814-349-2403

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