Own an AR-15/M4 Carbine? New KAC RAS II Soon to be Released.

Print Friendly, PDF & Email

Chances are, if you own an AR-15/M16 type rifle or carbine, and you’ve found this website, you’re already at least somewhat familiar with accessory rail mounting systems, which come in pretty handy for mounting all kinds of goodies such as optics, lasers, white lights, night vision devices, and vertical foregrips. Ya’ know–fun stuff. Well, Knight’s Armament, the same folks that brought you the well known RIS(Rail Interface System) and RAS(Rail Adaptor System), and the even better(for most purposes) FF RAS (Free Floating Rail Adaptor System), have now come out with the RAS II .

The RAS II by Knight’s Armament appears to be a copy of, and possibly a product-improved version of the A.R.M.S. S.I.R. System(Military Model) designed by Dick Swan. "S.I.R." stands for…

"Selective Integrated Rail", by the way. Knight’s is supposed to be shipping the new unit to dealers by the end of this month(September,2002).

So, if you’re interested in ordering a KAC RAS II for your favorite black 5.56mm bullet launcher, DefRev advises you to contact Wes Grant at Mid-South Tactical Network(MSTN). MSTN is a top notch AR-15 upper, accessories, and parts dealer that appears to have an inside track on all the latest goodies coming out of Knight’s.

Anyone interested in really learning about all of Knight’s Armament’s rail products would also be well served by visiting Quarterbore.com. Quarterbore.com has the most extensive information and best photos of Knight’s rail products, including the new RAS II, that DefRev has seen to date. They also have some good info on the .300 Whisper by SSK Industries. The .300 Whisper was invented by J.D. Jones(owner SSK), and something that’s definitely worth taking the time to find out about. Click on this link to visit the ".300 Whisper Rifles and Uppers" page at Quarterbore.com.

I’ve spoken with Dave Lutz, who heads up the Military/LE sales division at Knight’s. Anyway, Mr. Lutz filled me in on the history of the RAS II. Apparently, both the RAS II and A.R.M.S. S.I.R. were developed during the same time period(essentially alongside one another) to meet a specific military requirement. They were then both submitted for demonstration to the military at the same event.

The RAS II differs from the A.R.M.S. S.I.R. in that it does not cover the entire 1913 Picatinny rail on the upper receiver. So, it still allows the operator to utilize most of the upper receiver rail’s natural real estate. From what I’ve been told, the RAS II also does not allow as much barrel movement as the A.R.M.S. S.I.R. does.

Own an AR-15/M4 Carbine? New KAC RAS II Soon to be Released. by

About David Crane

David Crane started publishing online in 2001. Since that time, governments, military organizations, Special Operators (i.e. professional trigger pullers), agencies, and civilian tactical shooters the world over have come to depend on Defense Review as the authoritative source of news and information on "the latest and greatest" in the field of military defense and tactical technology and hardware, including tactical firearms, ammunition, equipment, gear, and training.

Check Also

Unity Tactical AXON Remote Dual Switch and Single Switch Systems for Tactical AR-15 Carbine/SBR Illuminator (Light) and Laser Accessories and Modules!

By David Crane david (at) defensereview (dot) com March 24, 2023 Billed as the ” …