These are brand new Factory Glock 19 Gen4 MOS 9mm Uppers offered as Stripped or Complete.
The more elusive and rare Complete Glocks 19 Gen4 MOS slides just arrived!
Compatible with 19 Gen4 lowers.
Compatible with 19 Gen5 lowers when using a Gen5 slide cover plate.
Not Compatible with 19 Gen3 lowers.
