In episode 99 of Bespoke Airsoft's "Bringing It Home", they feature the WE G17 and G19 Series Gen5 MOS (Modular Optic System) gas blowback pistols they have in stock. These are equipped with the RMR mount plate or already come with an RMR Red Dot Sight mounted.

Maniek44 takes a look a the G19 Gen 5 GBB Pistol from WE Airsoft that can accommodate an RMR sight. Available at most retailers in Europe, this GBB pistol is usually supplied with four RMR plates and one RMR dummy sight. Green Gas powered, magazine has a 25BB round capacity and has an initial muzzle velocity of 300fps.

Whilst we wait for airsoft manufacturers to catch up to make their Glock pistols up-to-date, we just wish they hurry and make a Glock 19 or Glock 17 Gen 5 MOS (Modular Optics System) which makes them ready for microsights. Here is a look by Tactical Toolbox on the Glock 19 Gen 5 MOS and tries to answer the question if it is worth getting one... "Is the Glock 19 Gen 5 MOS Worth it? Is It the Best 9mm Pistol of 2018??