If you carry a Glock then you should have an SCD on it. No if's, and's or but's, you need one. A Glock without an SCD is like a Pistol without sights. Still work but not like they were designed.
Reduced Travel SCD | Unity Tactical Atom Slide | Aimpoint T1 2MOA
| Overwatch Precision Flat Trigger | Gemtech Glock 17 Match Threaded Barrel
| Overwatch Precision Flat Trigger | Gemtech Glock 17 Match Threaded Barrel