This piston is for folks who want to run their ERECT9R on a M13.5 x 1 LH threaded barrel.
- MATERIAL: 17-4 Stainless Steel
- COATING: Head Treated
- WEIGHT: 1.12 Oz
- THREAD PATTERN: M13.5 x 1 LH
If you have a fixed barrel firearm DO NOT run your ERECT9R with the piston. Direct mounts can be purchased here.