The 6354DO features the Automatic Locking System (ALS) and is specifically made for use with red dot optic-equipped weapons.
Safariland ALS holsters
Safariland 6354DO ALS Optic Tactical Holster for Glock 19 - Milspec Retail
Safariland 6354DO Glock 17 ALS Optic Light Bearing Holster With QLS 19 Fork
Safariland 6354DO - ALS® OPTIC TACTICAL HOLSTER FOR RED DOT OPTIC MS19 - Left Handed
6354RDSO - ALS Holster w/ QLS19 Fork
Safariland 6354DO - ALS Optic Tactical Holster For Red Dot Optic, 6354DO-832-701-MS19-Parent
Safariland ALS holsters
Modular Holster Adaptor – True North Concepts
Safariland Tactical-Kit
Safariland 6354DO ALS Optic Tactical Holster Glock 19/23 Right Hand Ranger Green
SAFARILAND - Airsoft Superstore
Safariland GLOCK Hunting Tactical Gun Holsters for sale
6354DO - ALS® Optic Tactical Holster for Red Dot Optic