Difference between glock 19 gen 3 and gen 4

- Glock 19 gen 3 and gen 4 differences
- Difference between glock 19 gen 3 vs gen 4
- Difference between glock 19 gen 3 4 5
- Are glock 19 gen 3 and gen 4 slides the same
- Are glock 19 gen 3 and gen 4 barrels the same
- Difference glock 19 gen 3 and 4
- Glock 19 gen 3 vs gen 4
- Glock 19 gen 2 vs gen 3
- Gen 4 vs gen 5 glock
- What the difference between glock 17 and 19