This is probably the longes ASMR video done in airsoft. 4UAD Smart Airsoft show us the GBL Short Bolt Adapter and other stuff being installed in Daniel Defense MK18 Gas Blowback Rifle with folding stock... "Thanks to GBL we had some fun little upgrades to play around, We figured it would be fun to make some toy gun ASMR, and top that up with actual installation guide. Not gonna lie it is a long video, so if you wish to skip ahead just click the short cuts!"