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hill airgun original 



hill airgun Kit for Your  .177,  or .22, Caliber Umarex Gauntlet PCP Rifle 


May work with the new .25 caliber rifles too.  I have not tested one yet.  If you have, send Tim an email at:


Save money and time by filling up your Gauntlet less often – plus your air rifle shoots quieter.

installed one of these kits into my otherwise stock .22 Gauntlet rifle.  Click on the following link to view the results: https:  //

Best Design – Best Value


Adjustable power output, to meet individual air gunners needs:  Includes a metal shim for air gunners who want a bit more power.  Simply install the shim between the hill hammer spring guide, and the reservoir tube end cap. For even more power, you can add more shims  (18mm o.d. x 12mm i.d. x .51mm thick s.s.). No added power adjustment screws that may move and change the rifle’s tune. Nothing in the kit sticks out the back of the rifle’s tube or interferes with the stock and nothing on the rifle or stock is drilled on or machined. 
+ If you prefer, you can fill your Gauntlet to a lower pressure and still get lots of shots.
+ The rifle can still be degassed using the factory supplied degassing tool.
+ If need be, the rifle can be put back to it’s stock form at anytime.
Click on the following link to add hill hammer and bolt dry lube to your order
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*NEW –   I increased my rifle’s regulator output pressure setting from the factory setting of 1100 psi to 1200 psi. (If you want to raise or lower your rifles regulated output pressure setting, recommend having a qualified airgun smith to perform this procedure – do not adjust the regulator beyond the manufacturers rating).  Click on the following link to view the chronograph results:

Average pellet velocity when shooting  18.13 grain pellets is 815 fps.

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Package includes:  1- hill Hammer Spring and Guide kit, simple to follow installation instructions, PayPal fees, and fast free shipping to anywhere within the USA. 


Price: $37.98