According to Laylax, the PSS Hard Second Sear For VSR-10 Series is perfect for higher power builds. If you want one, watch the video to learn how to install it... "High strength steel build to prevent malfunctions cases by wear and tear. Essential for higher power builds that require heavier springs.

Compatibility:

• Tokyo Marui VSR-10 Series
• Tokyo Marui VSR-10 GSPEC
• Tokyo Marui VSR ONE"