It works fine on the 553, but I replaced mine anyway. Call me superficial but the aluminum lower just doesn’t look right.
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The aluminum lower looks too American. Yes, if you put the US aluminum lower next to a Swiss aluminum one, you can see the difference. But I'm so used to the look of the steel lowers, the Swiss aluminum one just screams, "Exeter" in my mind.
Y’all are nitpicking. Just be happy you can buy anything at all. We got all but nothing from the time in between from CCF (Larry G), to Armati. That is a long time. You can buy a 553 almost any way you like - gray steel lower and diopters.
Don’t get me wrong, I’m glad we have Swiss 55x. We can thank CO Gun Sales/Armati for breaking open the floodgates on imports and for Midwest Distributors (and Michaels Machines) for getting LE trade-in 552 and 551 on the commercial market. Without them we would all still be lamenting the lack of Swiss guns.
But, I wish JDI would have done gray and black complete 551s with steel lowers and more discrete import markings. JDI has done a real service in continuing the import of Swiss 55x. That one can order a 553 with their choice of short or long barrel, gray or black finish, steel or aluminum lower, green or black furniture, diopter or pic rail upper - that is truly awesome.
Ha. Well said.
What about the 55x design makes it so that the upper has to be steel instead of machined aluminum? Hypothetically speaking, if someone wanted to make a next gen rifle based on the 55x design, would it be possible to make it entirely aluminum (for weight saving, as that seems to be all the rage these days)?
My main reason for asking is pure curiosity, as I've always be interested in the SG55x series, and I'm just trying to learn a bit more about their engineering.