Airtight Rubber /Magazine Packing For VFC M4 /VMAG /HK416 GBB Gas Magazine Unicorn

Compatible with VFC 556 style AR (M4 /HK416) GBB series gas magazine.
Required to DIY ability.

※ Due to manufacturing process, the edge of the rubber may be slightly uneven, which does not affect the use.

Compatiblity:
VFC 556 style M4 /VMAG /HK416 GBB gas magazine
>>VMAG (V2 and V3)
>>HK416 V2
>>M4 (new ver. included M4 V2 and M4 V3, 20rds and 30rds style)
>>BCM style (same as M4)
>>T91 style

Specifications:
● Product Brand : UNICORN AIRSOFT (Taiwan)
● Material : Rubber.

Features:
● Made of 80 degree harder rubber.
● Adjust the design of the gas flow channel inside the pcaking.
● Improve airtightness and durability.