The Gemtech Replacement Piston allows you to easily change threads on a Tundra, or Multimount LID to use on U.S. standard threaded pistol (1/2-28), European threaded pistols (M13.5x1mm LH), or even 9mm AR-15 carbines (1/2-36 - requires piston blocker tube). Installs in the field without the use of tools.
Specifications and Features:
- Finish: Stainless
- Material: Stainless Steel
- Threads: M13.5x1 LH
This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. www.P65Warnings.ca.gov