4UAD Grading System Challenge: GHK M4A1 RIS V2
22 Jul 2021
Watch and listen carefully as 4UAD Smart Airsoft puts the GHK M4A1 RIS V2 GBB Rifle through its Grading System Challenge... "We all have heard great things about the GHK M4A1, but how good is it? We believe it is still mysterious, the most of performance information we could find were somewhat biased, and some people absolutely love this gun while some others just don't. Well, now 4UAD got it all figured out, the GHK M4A1 Grading System Challenge will tell you how exactly this gun performs."