The s410 is a great gun. The s300 came before the s400 and the s310 came before the s410. The reason it is better is because it was made before the anti tamper regulations came in. On the side of the breech there is a grub screw you can take out and if you put an allen key in there and turn you can adjust the power. This means you can adjust the power to suit the specific pellet you want to use, obviously using a chrono to keep it legal. Other than that it is identical to the s410 other than it doesn't have a pressure gauge or a safety, I don't need either!
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