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Fair enough.
Spot the odd one out.
Answer. Photo number one. Because its A cat and the other 2 are in E cat configuration.

Seriously? Its obviously a 30 so that makes it E. It also obviously looks like it holds more than 10 so its E. You cant pin a 30 to 7 and expect it to stay on A when fitted, you never have been able...

(Sigh).... havnt there been enough threads on what the features of an A/E cat firearm are? If you dont know by now then there is no helping you.