I own an SRC G36C. Its a great little gun, with one downside. The range absolutely sucks. In a skirmish I have to aim 6 feet above someone to hit the area around them, then duck to avoid the same person's pellets on a perfectly flat trajectory. I can't increase the fps of my gun as the limit in northern ireland is 328 fps and my gun is at 324 fps. I'm considering getting a longer inner barrel as my current one is 24.7 cm long. How much would I have to increase it to get a good range?