Snap Locking compatible with 545 Mark II, 550XPG, 550XP Mark II, 550XPG Mark II, 555, 556, 560XP, 560XPG, 562XP, 562XPG, 562XPW, 562XPGW, 565 models.Designed for secure and easy attachment, this locking mechanism ensures performance during use.construction supports consistent functionality across various operating conditions.Engineered to fit specific model requirements for integration.