VFC EVO AR Upgrade Pack

Got a stock EVO VFC AR?
You'll want these then:

• Crimson hop bucking - over chambering prevention and dual point contact patch provide fantastic consistency between shots
• Crimson NPAS - Allows you to adjust power output and is also the market leader for consistency at 1-1.3 Joules 
• Winter Hammer Spring - Less force to reset the hammer means less gas used and more shots downrange as well as cycling quicker 
• BBA Hop Arm - Replaces a two piece system with a single part, meaning less variables and even more consistency