Description
Glock 19m Gen 5 9mm 15rd FBI Marines Early Austria Half-Moon
Glock 19m Gen 5 9mm 15rd FBI Marines Early Austria Half-Moon
This Glock 19M is in excellent, used condition. This early production model appears to be in great shape. This model shows all of the features of the earlier 19M Gen 5 variants with the Half-Moon cut at the magwell, Ameriglo Agent Night Sights, nDLC coated internals, no Front Slide Serrations, rounded magazine release, extended slide release, and no MOS cut for optics.
The previous owner installed the larger backstrap on this gun in addition to the Streamlight TLR-7 light mounted on the frame. This firearm was manufactured in Austria and not the USA facility by Glock. The 19M was produced at the request of the FBI, and is also used by United States Marine Corps pilots. Included with handgun is the TLR-7, three 15 round magazines, additional backstraps, cleaning tools, manual, lock, and original Glock case.
The G19M was a law-enforcement-oriented variant that appeared around the transition to the Gen5-era G19. It is associated particularly with the FBI’s 2016-era handgun procurement, although the details of individual agency-issued pistols can differ.
The basic G19 Gen5 specification is:
| Specification | G19 Gen5 |
|---|---|
| Caliber | 9×19 mm |
| Standard magazine | 15 rounds |
| Barrel | 4.02 in / 102 mm |
| Overall length | 7.28 in / 185 mm |
| Overall width | 1.34 in / 34 mm |
| Height | 5.04 in / 128 mm |
| Weight, no magazine | 21.52 oz / 610 g |
| Trigger pull | ~26 N |
| Operating system | Glock Safe Action |
| Barrel | Glock polygonal-style rifling |
| Frame | Polymer |
| Slide | Steel, black finish |
Those figures are from Glock’s current G19 Gen5 documentation.
What distinguishes the 19M
The 19M is not simply a normal commercial G19 Gen5 with an “M” stamped somewhere. Early 19M pistols have several details that collectors use for identification.
Commonly discussed characteristics include:
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No traditional finger grooves on the front of the grip.
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Ambidextrous slide-stop controls, characteristic of the Gen5-era design.
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Revised magazine-release and internal configuration compared with earlier generations.
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Front slide serrations on many of the early FBI-contract guns.
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Factory ambidextrous controls intended for institutional use.
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15-round G19 magazines as the standard capacity.
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Distinctive early-production markings and configuration details.
The precise combination matters when determining whether a particular pistol is genuinely an early 19M rather than a later G19 Gen5 that has been configured to resemble one.
“Early Austria”
This part of your description is especially important.
“Austria” generally refers to the country-of-origin marking on the slide/barrel/frame components, rather than being a separate Glock model designation.
Glock has historically manufactured pistols in Austria, and early examples of various generations can have Austrian markings. However, “Made in Austria” by itself doesn’t establish that a G19 is a genuine FBI 19M.
For a collector/identification assessment, the combination of:
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serial-number format,
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slide markings,
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proof marks,
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frame markings,
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barrel markings,
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production characteristics,
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and configuration
is much more informative than the word “Austria” alone.
“Half-moon cut”
The half-moon cutout at the front of the magazine well is another important early-Gen5 characteristic.
It was introduced to help with grasping/removing a magazine if necessary. Early Gen5 frames with this cut are visually distinctive.
However, there is an important collector distinction:
A half-moon cut does not automatically make a pistol a 19M.
It is an identifying feature of certain early Gen5 configurations, so it should be consider together with the other markings and features.
FBI connection
The FBI selected the Glock 17 and Glock 19 in Gen5-era configurations as part of its handgun procurement program.
That historical association is one reason early 19M pistols are particularly interesting to collectors. But a G19 described as “FBI” isn’t necessarily an FBI-issued firearm. Commercial and law-enforcement-market examples can share many of the same physical characteristics.
If provenance is claim, documentation and markings are much more meaningful than a seller’s description.
AmeriGlo Agent sights
The AMERIGLO Agent family is associate with law-enforcement-orient Glock sight configurations.
AMERIGLO currently offers several Glock Gen5 sight sets, including its Trooper and Protector families. For example, the GL-818 Trooper uses a green-tritium front with an orange outline and a subdued serrated rear.
The Protector series similarly uses a tritium front and black serrated rear.
So if a listing specifically says “AmeriGlo Agent NS,” I’d want to see the actual sight markings or photos before identifying the exact Agent model. “AmeriGlo Agent” isn’t sufficient by itself to establish the exact SKU.
Streamlight TLR-7
The TLR-7 is a compact weapon-mount light design for compact pistols.
It’s an accessory, not part of the Glock 19M’s original factory configuration. Consequently, a G19M described as:
“Glock 19M + AmeriGlo Agent + TLR-7”
is best understood as:
Glock 19M pistol + aftermarket iron sights + aftermarket weapon light.
That distinction matters considerably if you’re assessing the firearm’s historical originality or collector value.
19M vs. ordinary G19 Gen5
A useful way to think about the terminology is:
| Description | Meaning |
|---|---|
| G19 | Glock 19, compact 9mm |
| Gen5 | Fifth-generation commercial/service configuration |
| 19M | Specific early law-enforcement-oriented configuration |
| FBI G19 | Usually referring to G19M/FBI-contract provenance or configuration |
| 15rd | Standard G19 magazine capacity |
| Half-moon cut | Early Gen5 frame feature |
| Austria | Manufacturing/origin marking, not proof of FBI provenance |
| AmeriGlo Agent | Aftermarket iron sights |
| TLR-7 | Aftermarket weapon-mounted light |
Glock’s current G19 Gen5 documentation confirms the standard 15-round capacity, 4.02-inch barrel and 21.52-ounce unloaded weight.
One important caveat
If you’re evaluating a particular pistol advertised as “Glock 19M Gen 5 FBI Marines Early Austria Half-Moon Cut Ameriglo Agent NS TLR-7,” I would not assume every part of that description is factory-original. In particular, the AmeriGlo sights and TLR-7 are accessories, while “FBI,” “Marines,” and “early Austria” are claims that need to be establish from the pistol’s markings/provenance.

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