Adams Arms P Series Micro Adjustable Block Piston Kit Mid

This system will work with .223/5.56 x 45 mm NATO. 

Kit includes:

• Patented One-Piece Bolt Carrier
• P Series Micro Block – Adjustable (5 Settings – 100%/74%/53%/32%/11%)
• Bolt Spring
• Drive Rod with Bushing and Spring
• Installation Instruction Card
• These Piston Kits No Longer Require the Receiver Bushing or Installation Dowel

The Adams Arms Piston System:

• A short stroke free floating piston system.
• Is Self-Cleaning.
• Carbon and gases are expelled forward away from operator.
• Corrosive resistant coating processes.
• Harmonics are not transferred into the barrel.
• Doesn’t vent directly to atmospheric pressure; this eliminates flash signature and super sonic crack which is optimal for night vision and suppresses fire.
• Has a Lifetime Warranty.
• Mid: 9.866″ from barrel extension to shoulder