KWA OEM Repair Parts are specifically designed for precision fit and finish in KWA GBB LM4 Rifles and Magazines. Keep your rifle performing like the day you bought it with KWA OEM parts.
The KWA LM4 Inner Piston O-Ring is Part 190 for the LM4 PTR gas blowback rifle. This KWA OEM part fits all US versions of the LM4 PTR.
KWA LM4 Inner Piston O-Ring Part 190 Features:
-Precision Fit and Finish
-Guaranteed KWA LM4 Compatibility