Safariland Model 6378: built for the Glock 20 Gens 1-4
The Safariland Model 6378 exists for one job: keep a Glock 20 Gens 1-4 exactly where it belongs until the moment its owner needs it. That’s the balance Safariland has been refining since 1964.
Why officers trust it
- Uniform-matched finishes. Offered in STX Plain, STX Tactical to match agency uniform standards.
- ALS (Automatic Locking System). The pistol locks the moment it’s holstered, and a straight-back thumb release frees it in one natural drawing motion — nothing to pinch, rock, or think about.
- SafariLaminate construction. Safariland’s duty laminate shrugs off impact, rain, and vehicle-frame abuse that ends leather rigs.
Who carries it
Detectives, plainclothes assignments, and off-duty carriers run this class of holster where a duty rig would print or snag.
Specifications
| Fits | Glock 20 Gens 1-4 |
|---|---|
| System | ALS |
| Ride / carry | Concealment |
| Hand | Left Hand / Right Hand |
| Finish options | STX Plain, STX Tactical |
| Colors | Black |
| Series | Safariland 6378 |
| SKU family | 6378-383 |
Common questions
Can I carry with a weapon light mounted?
No — this shell is cut for the Glock 20 Gens 1-4 without a rail-mounted light. If you run a light on duty, look for the light-bearing version of this series instead.
Is it available left-handed?
This listing covers left hand and right hand configurations — pick your hand in the options above before adding to cart.
Does it need a break-in period?
No. The shell is molded to the firearm, so retention is set by the locking hardware rather than friction — fit is correct out of the box.
About Safariland
Safariland has been building holsters since 1964, when Neale Perkins sewed the first ones in a Sierra Madre, California garage — and it went on to define modern duty retention, including the industry’s first Level III retention holster. Need a fitment double-checked before you order? Ask the Network — we spec Safariland rigs for individual officers and full agencies alike.
