The S&W Model 411 is the "Value Series" equivalent of the [much]higher-dollar Model 4006. The 411 will take the same magazines as the 4006, 4003, 410, etc.-in other words, all the mags for the FULL-SIZE, double-stack .40's are interchangeable...even between 10 and 11-shot versions. The TRUE 411[as opposed to a 410...] will have STEEL sights...while the 410 has PLASTIC sights. I have no idea what, if any, aftermarket[or OEM] sights fit the 410...however, I've got a 411...I had MILLETT sights [adjustable rear, tritium insert front] installed on the 411 and like 'em fine. Be advised, however...the replacement REAR sights for the "Novak"-type["third-generation"] rear WILL NOT WORK with the 411's sight cuts...you'll need a REAR sight for a "second-generation" rear sight cut. If this sounds too convoluted, Millett's technical people can help you sort it out. Good Luck!!!....mikey357s
