Adams Arms P Series Micro Adjustable Block Piston Kit Mid Length Low Mass Carrier

The Adams Arms P Series Micro Adjustable Block Piston Kit Mid Length Low Mass Carrier delivers a clean, reliable upgrade for .223/5.56 x 45 mm NATO rifles, combining a patented One-Piece Bolt Carrier with the P Series Micro Block that offers five adjustable settings for precise tuning of performance and dwell, now without the receiver bushing or installation dowel. This short stroke, free-floating piston system is self-cleaning and designed to expel carbon and gases forward away from the operator, with corrosion-resistant coating processes and harmonics that are not transferred into the barrel, contributing to steadier swings and enhanced accuracy. The system's design also reduces visible flash and sonic crack, which can be advantageous for night vision use and suppressor compatibility, and it includes essential components such as a bolt spring, drive rod with bushing and spring, and an installation instruction card for a streamlined upgrade. With a mid-length profile measuring 9.866 inches from the barrel extension to the shoulder and a lifetime warranty, this kit from Adams Arms provides a robust, long-term solution for achieving smoother cycling and improved reliability in modern sporting rifles.