no the 1300 barrel does not have gas ports in it yes the 1300 barrel will fit ,no it does not have the gas ports BUT any competent machine shop or gunsmith can drill out the ports for you.
automatic rifles work by the exerting gas made from the bullet and the gas pushes back the bolt loading a new round in
Yes there are some newer spring air rifles that are capable of being switched to Nitro Piston Gas systems. Check with the manufacture.
Gas or recoil operates the action.
Cost prohibitive
Uses the gas from the burning propellant
Mostly heavy artillery, and rifles; and later, poison gas, mustard gas; burn your lungs out.
planes, submarines, torpedoes, tanks, gas (chlorine gas, mustard gas), machine guns (with shells), bolt-action rifles
An engineered landfill is designed to capture and treat any emissions that may come from the decomposition from the garbage. The emissions may be in the form of liquid runoff or vapor emissions like natural gas.
M65 Gas Mask.
the gas pressure from the exploding shell ejects the empty casing and activates the reload mecanism
Half the moving parts of a gas engine. double the fuel economy of gas engine. typical life for diesel is 300,000miles vs. 150,000 for same engine engineered for gas. Fuel milage gets better with age.