Customizable frame size Every single GLOCK Gen5 comes along with beavertail backstraps in two measurements. The backstrap body makes it possible for the people to change the circumference in the grip to suit their unique hand dimension. Gen4 RTF - Rough textured frame The Gen4 verified tough textured frame surface https://torchworldsprinklez87531.blogunteer.com/29958258/g17-gen5-mos-can-be-fun-for-anyone