Home > AR-15 Uppers and Parts > Gas Piston Systems
Sort By:
Page of 1
Osprey Defense Gas piston conversion system
Osprey Defense Gas piston conversion system
Our Price: $319.95

The OPS-416 is designed to function flawlessly on quality mil-spec guns (Bushmaster, Colt, Rock River, DPMS, Stag Arms, FN, Smith & Wesson, Olympic, Armalite, etc.) in either full auto or semi auto with standard profile barrels measuring no greater than 1.00" outer diameter or less, and measuring 11.5” to 20” in barrel length.

OPS-416 Fits M4/carbine length gas systems and barrels no greater than 1.00" outer diameter.

  • 4 Minute Install
  • 13X Increased Reliability
  • Semi-Auto or Full Auto
  • Suppressed or Unsuppressed
  • Will Outlive Your AR15/M16/M4
  • True Drop-In Solution
  • No Permanent Gun Modifications
  • No Valves/Screws/Springs
  • 5 Year Warranty
  • 100% Made in U.S.A.
 more info
Osprey Defense Gas piston conversion system
Osprey Defense Gas piston conversion system
Our Price: $319.95

The OPS-418 is designed to function flawlessly on quality mil-spec guns (Bushmaster, Colt, Rock River, DPMS, Stag Arms, FN, Smith & Wesson, Olympic, Armalite, etc.) in either full auto or semi auto with standard profile barrels measuring no greater than 1.00" outer diameter or less, and measuring 11.5” to 20” in barrel length.

OPS-418 Fits Mid-length gas systems and barrels no greater than 1.00" outer diameter.

  • 4 Minute Install
  • 13X Increased Reliability
  • Semi-Auto or Full Auto
  • Suppressed or Unsuppressed
  • Will Outlive Your AR15/M16/M4
  • True Drop-In Solution
  • No Permanent Gun Modifications
  • No Valves/Screws/Springs
  • 5 Year Warranty
  • 100% Made in U.S.A.
 more info