This is the Magpul upgrade model with very nice tactical furnture from Magpul. The fold down sights front and rear are well worth the extra coin. Most people will note the flash hider but the quick release sling mount will quickly become a favorite feature. The grip storage is also a real nice treat. The only drawback is one mag, 25 rounds is great but how about a few 10 rounders or another standard 25 mag. Extra mags are sold out everywhere, unless you drop $40.00 to $60.00 on eBay!
Upgrade S&W M&P AR 15-22