Does anyone here have a lot of experience with these gas piston guns? Bought one for a brother from another mother. Had it in the works then he had a stroke. He appears to be making a full recovery. He will have therapy but he lacks strength that was previously there. The gun is difficult to cock and it may make him dislike the gun. That can not be helped if it happens. I have to take measurements and find tubing to add to the barrel for leverage in cocking. Only a slide on and off cocking lever. Was thinking a slot cut/milled into the lever to slide past the front sight. It will be easily removed for firing. The caliber choice was because he has large hands making loading a 177 a laughable exercise. The 30 is large enough. Any insights on these guns? Thanks and Be Well Brothers, Bandito.