Review on 💨 High Pressure Hand Pump with 3 Stages for Charging Gas Filter Gauge Valve Hose - Up to 4500 psi (Silicone Oil NOT Included) by Adrian Allen

Great pump. Works great with the vent on my .25 caliber Airforce Escape. A great alternative to pumps from other brands. This one costs $100 less! The problem I've had so far is the o-ring where the bushing screws onto the hose. It blew constantly, causing it to leak. It was too thick and when you tightened it pushed out instead of sitting in the thread groove and as you increased the pressure it dislodged the o-ring from its place. But my cousin had a set of o-rings on hand and I replaced them with the correct one and it's been working great ever since! Also, the pen is not ideal for the pressure needed to inflate. I had an open wound on my arm after shooting about 20 rounds the first day! I mean he ate my hand! I wrapped it in a thick wool sock and now everything is fine. It only takes 75 pumps to reach 2000-3000psi of pressure on a 213cc tank. Also highly recommended for those who are looking for a hand pump for their PCP rifle. I warn you this requires muscle, I'm in good shape so I can keep up but it's not for the faint of heart. My cousin got off the bottom and tried to pump it up when the pressure was over 2500psi haha. so get ready to sweat! I definitely have!