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KAC M4 RAS with screw
KAC M4 RAS TogetherKAC M4 RAS setCapco Lower Rail with Stamped Cage CodeCapco Lower Rail with Stamped Cage Code

Knights Armament Co. M4 RAS Rail adapter system NSN: 1005-01-500-4441

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The Knights Armament M4 Rail Adapter System provides users with a customized platform on their firearms. Easy to mount accessories with few tools.

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Knights Armament Co. M4 RAS Rail adapter system NSN: 1005-01-500-4441

This KAC M4 R.A.S. switches from the standard hand guards on 14.5 & 16 inch MILSPEC carbine barrels. Used as a drop in quad rail for the AR15 Platform. Picatinny rails on all sides allow multiple possibilities for all your mounting solutions. Accessories mount quickly and easily. The M4 R.A.S. is available in a set.


  • Length: 6.25″
  • Weight: 8.9 oz

Easy installation with minimal tools.

Upper and lower Section P/N 98064 NSN: 1005-01-500-4441

Knights Model# KM98064

Other accessories available for the KAC M4 RAS

Please also see rib rail panels 

KAC Forward Pistol Grip Vertical Grips

Knights Armament Company Folding Micro Rear Sight, 200-600 Meter Adjustable



Additional information

Weight .55 lbs
Dimensions 6.75 × 2.5 × 2.25 in



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