The EMG SAI Tier One Upgrade CNC Aluminium Slide Set designed for the Umarex (VFC) Glock 17 Gen 4 GBB pistol. The slide set is fully licensed by EMG and SAI so you can expect to find all the correct markings, and it comes with a RMR sight right out of the box! This slide set could truly turn your boring standard G17 Gen 4 into a tacti-cool pistol!

The Inner barrel has 14mm CCW threadings, which means you could mount tracer units.

Compatibility: 

Umarex (VFC) Glock 17 Gen 4 Gas Airsoft Pistol

14mm CCW Threads

RMR Optics

Includes: 

x1 EMG SAI Tier One Upgrade CNC Aluminium Slide Set w/ RMR Sight (by G&P)  for Umarex/VFC Glock 17 Gen 4 GBBP