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First Look: Stern Defense RAB-AD

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NEW from Stern Defense comes the Rapid Attach Buttstock Adapter! Turn the buffer tube on your AR-15 into a quick detach part for fast, compact, easy storage!

We got to play with the RAB-AD at CANCON 2022 and were highly impressed with it! Make carbines small or pistols tiny, perfect for storage or traveling.

From backpack rifles to bug out bags to just making getting to the range easier, the RAB-AD has some interesting applications.

Stern Defense RAB-AD at CANCON 2022

Instructions on how to use the RAB-AD:

To detach, push the button and twist counter-clockwise 30 degrees. The buttstock will then be separated from the firearm. To re-attach, align the two pieces, push in and turn clockwise 30 degrees. The steel locking mechanism automatically secures the adapter. It's 7075 aluminum construction and steel internals make the RAB-AD both robust and lightweight. The RAB-AD is designed for gas piston, direct impingement, direct blow back and radial delayed blowback systems in the AR platform. 

MSRP is $140


  • Designed, machined, and assembled in the U.S.A
  • 7075 aluminum body
  • Steel internals
  • Hard coat anodized for maximum wear protection
  • Buffer retainer to keep the buffer weight in the tube while disassembled 
  • Bolt carrier extension compatible with all standard length AR-15 bolts
  • RAB-AD weighs 3.5ounces
  • Adds 1.25 inches to length of pull

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