For those looking for an optic-ready platform, the SIGM400 SRP removes the front sight tower and replaces it with an M1913 railed front gas block. This sight-ready platform allows the operator to mount any optic without worrying about the sight tower. The gas block accepts all iron sights designed to work on the Mil-Spec Picatinny rail.
THE SIG M400 SERIES TACTICAL RIFLE, designed for use in law enforcement, military operations, or the sporting field as well as competitive shooting. The SIG M400 is a true AR platform tactical rifle. Provides unparalleled accuracy, with a 16" chrome-lined and phosphate coated barrel that provides maximum durability and corrosion resistance. A 7075-T6 aircraft grade aluminum forged lower receiver adds to the durability and reliability.
|Operating System||Direct impingement|
|Rifling||1 in 7"|
|Number of Grooves||6|
|Weight w/o Mag||6.5 lbs.|
|Great product. Looks good, feels good. High quality. Very reliable and versatile.|
|Sig and Rockwell both came through|
|Rockwell called me when my spot came up on the waiting list for this Sig M400 optics ready, finished the purchase and it shipped the next business day. One thing to worry about with internet purchase is if the rifle was on display / had people handling it and scuffing it up. Rockwell treated me right sending me a Sig factory sealed box with a perfect M400 SRP only 3 weeks out of production in it. It means a LOT to know nobody was screwing around with my purchase. Thanks Rockwell. The Sig M400 SRP is an awesome deal... if you look at all the detail they put into it, there is no better deal for a base rifle to build whatever you want. M4 feed ramps, chromed, coated barrel, upper height railed gas block, built in wedge screw between upper and lower with a nice tight fit, mil spec tube, etc. there is no skimping... I know a couple people with M400s and they have never, ever had a misfeed or any sort of problem with any kind of ammo... so far it's the same with me, totally happy customer.|