19 Match 9MM Barrel with 9/16×32 Thread 4-Port Compensator (Fits Glock G19 Gen1-4) – KKM
4 New Threaded Barrel Glocks - Athlon Outdoors
Glock Threaded Barrel Protector | Glock parts South Africa | - TheGlockShop
VELOCITY BARREL FOR GLOCK 19 - Killer Innovations
BARRELS GLOCK® SILENCERCO THREADED BARREL FOR GLOCK 19 SS 1/2"X28 - Brownells UK
Umarex Glock 17 Gen 4 4.5 mm (.177) BB / Pellet Threaded Barrel / Dual – Scopes and Barrels
FYI Glock has new factory threaded barrels (1/2x28 RH) on their store website (first time I've seen American-style threadpitches available, not their European M13.5x1 LH threaded barrels) : r/Glocks
Glock 43x OEM threaded Barrel : r/Glock43X
PMM Threaded Barrels for Glock - Parker Mountain Machine
G19 Barrel - Threaded - Black Nitride - Zaffiri Precision