Air Venturi Rail Lock Spring Compressor

Make an adapter that will thread onto the front that is adjustable up and down that is secured with a lock nut. In most cases it is only off center by 1/4" +- OR make the other end adjustable up and down.

Pros
Easy to use and is very secure. Makes me feel safe when it lines up ok.

Cons
Needs to have a adjustment to be able to move the screw/rod up and down. Not all pistols and rifles are centered in the same spot. One rifle was kinda scary that I removed the spring with this having to make an adapter to make it so it would be centered on the spring plate. When the spring was out about 3.5" I had to hold it centered by hand (gloved) to keep it from moving off center...Price is a little high. Mine has rusted here in Hawaii even when keeping it wet with oil... Should be Stainless steel at this price. But, it beats the monster I had built.

not only is it simple but very effective an efficent at its job wish i had found it earlier before building the big on i have , this one is even portable can put in my mobile kit when doing service on springers an NP`s ,makes my job a lot easier .

Pros
simple to use , does as it was designed

Cons
could have had a crank knob instead of using allen wrench

I have tuned over 30 springers in my life, because I love spring airguns. But since I have gotten older, it has become a pain to tune some airguns without a compressor. I used this to put a piston seal in a RWS 48 .25cal that I had and wanted to see wha the new Vortek piston seal would do. This compressor made it so easy that I now want to get back into tuning springers again. This is a no brainer if you love springers.

Pros
Makes life very easy.

Cons
No cons, only PROS on this item. I wish I had invented it.