Is your LM4 PTR Top Rail loose? Do you want to mount heavy optics? This 2nd Generation One piece upper reciever from KWA is a direct replacement for your old 1st generation 4 piece receiver. Make your Training rifle more realistic and more reliable. The new Gen 2 one piece upper eliminates loose top rails, and the Rear Trunion has been redesigned for a tighter fit in the lower eliminating upper receiver wobble.
LM4 Part 24s Complete One Piece Upper Receiver Features
- Solid One Piece metal Construction
- Anodized Black Finish
- Includes Dust cover and Forward Assist for easy installation.