Umarex / VFC - VMAG 30rd M4 & HK416 GBB Polymer Magazine Springs and is typically usually only

and is typically usually only seen in high-end weapon builds

and a Polymer Hand guard

and the second trigger action fires the shot

meaning that a Single Round is Discharged for every Trigger Pull and also Simulates Recoil for a more realistic experience

with a shorter stroke gives a faster shooting speed

Umarex / VFC - VMAG 30rd M4 & HK416 GBB Polymer Magazine Springs and is typically usually onlyUmarex VFC 30rd Gas Magazine VFC have been producing HK416 and M4 GBBR series for a long time, but for the longest time people have been looking for a polymer light weight magazine for the Umarex VFC HK416 M4 GBB platform, now VFC have just introduced us the VMAG, which provides great gas efficiency, same magazine capacity as the real gun magazines yet remaining lightweight. Fit for all Umarex HK416 GBBR VFC M4 GBBR platform.