How To Upgrade a Umarex Fusion Air Rifle With an Oversize Bolt Handle.

Archer Airguns Oversize Bolt Handle for the Umarex Fusion makes operating this air rifle feel much easier. This post explains how to make the upgrade for this popular CO2 air rifle.

Below. The Umarex Fusion Oversize Bolt Handle in place and ready for use.



SAFETY FIRST! Ensure that the air rifle is not loaded, has no pellet in the barrel and has no CO2 in the gas tube before working on your air rifle. As you can see, I removed the tube cap to ensure that the air rifle could not fire accidentally.

First remove the safety lever by undoing the small Philips screw in the underside of the lever. Now pull off the lever from the safety tab. DO NOT MAKE ANY CHANGES TO THE TRIGGER OR SAFETY ASSEMBLY. Next, remove the front stock screw. This is the Philips screw in the underside of the stock, directly below the barrel band.



Now remove the rear stock screw. This is the Philips screw immediately to the rear of the trigger guard. Note that the trigger casing cover will also come away when this screw is removed.

Ensure that the safety tab is aligned (forward) with the cutout in the stock. The action can now be pulled up, forward and out of the stock. Note that this is a little tricky and requires some “wriggling” to achieve. Be patient and careful, it will come out!



Now loosen the setscrew in the end of the bolt and remove the factory bolt handle. Install the Oversize Bolt Handle in the side of the bolt with the lock hole facing the rear and tighten the bolt setscrew. The setscrew must engage firmly in the hole in the bolt handle.







Return the action into the stock, replace the front and rear stock bolts, together with the trigger casing cover. Now replace the safety lever and fix it in place using the small setscrew.



TEST OPERATION BEFORE LOADING AND FIRING THE RIFLE FOR THE FIRST TIME! NOTE THAT INSTALLING THIS PART WILL INVALIDATE THE WARRANTY ON YOUR AIR RIFLE.

Now your Umarex Fusion has a smart new upgrade that makes operation easier!