XTech Tactical MTX 43+3 Glock 43 Magazine Extension Kit Black 3. Designed for backup or glove box use this kit repurposes your existing magazine housing and includes a custom-engineered spring for reliability. This extension offers increased capacity and performance for EDC or range use. Specifications for XTech Tactical MTX 43+3 Glock 43 Magazine Extension Kit: Manufacturer: XTech Tactical Color: Black Gun Make: Glock Gun Model: Glock 43 Features of XTech Tactical MTX 43+3 Glock 43 Magazine Extension Kit Adds +3 Rounds to Glock 43 6-round magazines (9mm) Engineered extended spring for consistent feeding Quick installation with detailed video instructions Robust performance backed by innovative patented design Package Contents: XTech Tactical MTX 43+3 Glock 43 Magazine Extension Kit What firearm models does the manufacturer say XTech Tactical MTX 43+3 Glock 43 Magazine Extension Kit is compatible with? The manufacturer suggests that XTech Tactical MTX 43+3 Glock 43 Magazine Extension Kit is compatible with Glock 43XTech Tactical XT3031301: MTX 43+3 Glock 43 Magazine Extension Kit Black