WALTHER PPQ GBB Holosun The upgraded ball bearing spring guide MA61 025 The upgraded ball bearing spring guide for the SIG SAUER ProForce MPX provides ease of mind with a steel reinforced body and reduced friction of your spring The PTS EPM E9 Magazine is a 110 round spring loaded magazine that features a constant curve internal geometry for reliable feeding and a tough Dupont Zytel polymer outer body that will withstand the toughest field use conditions You'll find the controls and size identical to your Walther self defense handgun firearm The Walther PPQ GBB (gas blowback) airsoft pistol is a great addition for your next event and works well in CQB situations and anytime you need to practice to protect