The Wunder-Bar Mark 4 M410620BSM3 is a 10-button post-mix bar gun, the mid-volume variant of the Mark 4 platform. Six carbonated buttons cover branded sodas, two non-carbonated handle juice and mixers, two flex lines round out plain water and soda. The Mark 4 platform is the industry workhorse in American commercial bars.

10 vs 14 Button Sizing

10-button is the right call for moderate-volume bars with a focused cocktail menu. The 14-button variant is for high-volume bars running complex menus with more branded soda options. The Mark 4 hardware behind the gun is identical between configurations; the only difference is button count and lever spread.

Why Mark 4

The Mark 4 series has been the dominant post-mix platform in American bars for two decades. Parts are widely available, every distribution tech knows the platform, and the lever action holds calibration through years of service. Service techs report Mark 4 guns outlast newer competing platforms in heavy use.

Service and Parts

Full rebuild kits, replacement triggers, button covers, and hose assemblies available. Same-day ship on the complete gun assembly; common service parts ship from same warehouse.