Spring or gas firing mechanism? Both types work by way of a piston that compresses air after which releases it with every trigger squeeze. The differences are the types of compressors that they use to power the piston. Spring-powered guns have a spring system in place, when gas-powered guns rely https://gunsforsaleinsportsacadem64959.sharebyblog.com/34535262/a-review-of-shotguns-las-vegas