Adams Arms Piston Kit with Adjustable Picatinny Block – Carbine Length with Standard Carrier


Transform your AR with the Adams Arms Piston Kit, an advanced solution turning direct impingement systems into efficient, piston-driven mechanics. This kit features adjustable gas settings, a self-cleaning design, and forward gas expulsion, ensuring cool and clean internal operation. Ideal for night vision and suppressed fire, this upgrade promotes longevity and superior performance in your AR-15.

Availability: Out of stock SKU: FGAA-03107 Category: Tags: ,


Adams Arms Piston Kit with Adjustable Picatinny Block – Carbine Length with Standard Carrier

The Adams Arms Piston Kit converts your Direct Impingement AR into a Piston-Driven system.  This kit uses the existing gas port on the barrel to work the action of the included inverted piston.  Firstly, instead of directing the gases into the receiver, they go into a gas plug and drive rod sleeve.  Secondly, the contained gases within the drive rod sleeve push the bolt carrier rearward using the pressure to cycle the action.  Also, the Adams Arms Piston operating system mechanically actuates the bolt carrier external of the receiver.  Therefore, this keeps the internal receiver and all its moving parts clean and free from heat and carbon buildup.

Adjustable Picatinny Block Piston System Features:

  • Self Cleaning
  • Carbon and Gases expel forward, away from the shooter
  • BCG and other internals remain cool and clean
  • Does not vent direct; Eliminates flash signature and supersonic crack – ideal for night vision and suppressed fire

Kit Includes:

  • One-Piece Bolt Carrier
  • Adjustable Picatinny Block with 3 settings
    • Full gas for standard fire
    • Half gas for suppressed
    • No gas for single shot
  • Upper Receiver Bushing
  • Bushing Installation Rod
  • Bolt Spring
  • Drive Rod with Bushing and Spring

Additional information

Weight 2 lbs



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