Your new air cushioned buttstock will give you years of shooting pleasure. We offer the following instructions to assist you in the use of this product:
The recoil reducer does not need external lubrication. The air cylinder is lubricated and sealed during manufacture. However, if you get oil (or water) on the unit it will not be damaged. Please note: Excess lubrication will show around the center guide rod in the form of a brownish lubricant after the stock is in use. This is normal and may be wiped away. It is not required for proper operation.
The recoil reducer will need additional air once or twice per year just as the tires do on your automobile.
The air in the recoil reducer may be adjusted by removing an access plug in the recoil pad, screwing on the valve extension provided, then using a standard American air compressor to add air. Please note: An air compressor with a tank works best. Those without a tank usually have a lever lock type air chuck which releases air from the cylinder when removed, making it difficult to accurately get air into the cylinder. Call G-Squared regarding an adapter for this type. The stock works best with pressures of 90 to 125 psi. The exact amount is not critical, however we recommend that you stay within this pressure range. You should have enough air so that you can comfortably shoot without collapsing the stock into your shoulder prior to firing. Most shooters fill it until it feels about right (usually around 100 to 105 psi) then forget about it. The exact amount of air is not of concern. If it's comfortable to shoot then it's working right and working for you. Do not be concerned about damaging the unit if you put in too much air. We test them to 220 psi and store them that way.
When filling the stock learn to press the nozzle firmly on the filler valve and snap the nozzle off sharply when the desired pressure is reached. Practice helps. Try it a few times at home to get used to the way it operates.
If you have the E-Z HP pump do not use your valve extension. Thread the pump directly onto the recoil reducer valve until the gauge registers pressure and follow the instructions provided with your pump.
The comb height adjustment may be accomplished as follows:
To install or remove the buttstock you must remove the comb. To do so, unlock the 1/8 hexagon head allen screw at the rear of the comb and turn the forward adjustment clockwise while raising the rear of the comb with your fingers until the rear of the comb clears the vertical steel post. (You do not need to remove the recoil pad from the rear plate or remove any screws to remove the comb.) Remove the T-handle hexagon key, turn the comb 45 degrees right or left, push forward and lift the comb off of the stock.
The rear assembly including the recoil pad may then be pulled away from the forward portion of the stock in one piece.
The stock may then be removed using the 5MM hexagon wrench (provided with your SHOCKMASTER) inserted in the stockbolt from the top of the stock. The stockbolt is not accessible from the rear of the stock.