Mine is a more traditional auto. (also grandfathered in the law, but can't go outside, etc.)
'assisted opening' knives are legal to buy and own, tho not to carry 'without good reason' as they all are lock knives, a no-no. they are OK as the springdoes not open the knife directly via a button or lever release, but only 'assist' the opening started manually. the end result is the same, but one is legal and the other isn't. strange world lawyers live in. customs in the US were going to ban assisted opening knives by internal regulation (ie. not based on law, but just because they felt like it) but there was a heartening groundswell of opinion and letters to congress that managed to scare them back into their holes. until next time.