Handgun Custom Parts | Reinforcement for KSC/MARUI M4 GBB

Steel HOP-UP Round for KSC M4A1 GBB (Ver.1)  

 
You can choice theGB-01-01 for more airtight.

For KSC M4A1 & KWA MAGPUL Gas Blowback Series

Material: Steel
Weight: 8 g 
Item No.: GB-01-04

Suggested Retail Price: USD 18.00