Product Details
If you've got a Glock 21 Gen 4 in 45 ACP and want to add a suppressor down the road, this OEM barrel is exactly what you need. It's the factory Glock part, which means it'll fit and function just like it should. The threading is M16x1 with a left-hand pitch, so make sure that's what your suppressor calls for. Simple, straightforward upgrade.