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O.o I didn't even know this was a thing! Depending on your location, I'd get a well known local gun tech to do the R-hop as I don't know the quality of what you linked (perhaps someone else can comment).
R-hops can lift pretty much any weight BB; 0.28, 0.3, and 0.32 are fairly common weights for an R-hop setup. Brands... depends on availability and if it's bio or not.
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