![GLOCK - Why you should buy a Gen 5 - not a Gen 4 or 3 (what's different from gen 4 to gen 5?) - YouTube GLOCK - Why you should buy a Gen 5 - not a Gen 4 or 3 (what's different from gen 4 to gen 5?) - YouTube](https://i.ytimg.com/vi/oM_EEEc1tUc/sddefault.jpg)
GLOCK - Why you should buy a Gen 5 - not a Gen 4 or 3 (what's different from gen 4 to gen 5?) - YouTube
![Gen 3 & 4 Glock 7.5" Barrels IGB Austria Match Grade Polygonal 7.5" Threaded Barrel for .9mm & .357Sig Calibers - YRSInc Gen 3 & 4 Glock 7.5" Barrels IGB Austria Match Grade Polygonal 7.5" Threaded Barrel for .9mm & .357Sig Calibers - YRSInc](https://www.yrsinc.com/wp-content/uploads/2019/07/7_inch_poly_1-1-1.jpg)
Gen 3 & 4 Glock 7.5" Barrels IGB Austria Match Grade Polygonal 7.5" Threaded Barrel for .9mm & .357Sig Calibers - YRSInc
![Gen 3 & 4 Glock 7.5" Barrels IGB Austria Match Grade Polygonal 7.5" Threaded Barrel for .9mm & .357Sig Calibers - YRSInc Gen 3 & 4 Glock 7.5" Barrels IGB Austria Match Grade Polygonal 7.5" Threaded Barrel for .9mm & .357Sig Calibers - YRSInc](https://www.yrsinc.com/wp-content/uploads/2019/07/16_inch_barrel_explained_-_polygonal_3-600x450.jpg)
Gen 3 & 4 Glock 7.5" Barrels IGB Austria Match Grade Polygonal 7.5" Threaded Barrel for .9mm & .357Sig Calibers - YRSInc
![Glock Gen 5 Threaded & Fluted Barrel Standard Length Made By IGB Austria – Match Grade Polygonal Profile for 9x19, 9x21, 9x25 And .357 Sig - YRSInc Glock Gen 5 Threaded & Fluted Barrel Standard Length Made By IGB Austria – Match Grade Polygonal Profile for 9x19, 9x21, 9x25 And .357 Sig - YRSInc](https://www.yrsinc.com/wp-content/uploads/2020/03/Standard-Threaded-Barrel-Polygonal.jpg)