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Mega Arms AR15 MKM & MTS Gas Piston Set – Rifle Length

MSRP: $336.00
Our Price: $252.00
You Save: $84.00 (25 %)
In Stock and Ready to Ship!
Item Number: MTS-P400
Manufacturer: Mega Arms
Manufacturer Part No: 723120300552

The Retro-Fit Piston Driven System developed by Adams Arms will transform and revolutionize the AR15/M-16 Rifle into a modern day platform that will continue to be relevant for many more decades to come. 

This Mega MTS piston system is designed only to fit on the MEGA Monolithis Tacitcal System.  Not intended for use on Mil-Spec rifles.


  • Patented One-Piece Bolt Carrier
  • .750" Picatinny Gas Block with 3 settings (full gas for standard fire, half gas for suppressed, no gas for single shot)
  • Gas Plug
  • Upper Receiver Bushing
  • Bushing Installation Rod
  • Bolt Spring
  • Drive Rod with Bushing and Spring
  • Installation DVD 

The MTS 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.
  • Adjustable gas settings for various applications.
  • Doesn't vent directly to atmospheric pressure; this eliminates flash signature and supersonic crack which is optimal for night vision and suppresses fire.