Glock 17 Gen 6 MOS 9mm Pistol with 4.49" Barrel and 17-Round Capacity - Freedom Finger Triggers
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About this product
The Glock 17 Gen 6 MOS is a full-size duty/competition pistol equipped with a factory milled slide for optical sights. This model is the direct successor to the Gen 5, formally adding Glock's Modular Optic System (MOS) to the G17 platform for the first time. The inclusion of MOS as a standard feature addresses a primary market demand for optics-ready handguns without aftermarket modification.
What is the Glock 17 Gen 6 MOS used for?
It is used for duty carry, competitive shooting divisions like Limited Optics, and high-capacity home defense. The 4.49-inch barrel and 17-round standard magazine establish it as a full-size service pistol. Its MOS compatibility allows for a direct-mount red dot sight, significantly improving rapid target acquisition over iron sights alone.
How does the Glock 17 Gen 6 MOS compare to the SIG Sauer P320 XFULL?
The Glock 17 Gen 6 is superior in documented service-life reliability and aftermarket parts commonality, while the P320 XFULL often provides a better out-of-the-box trigger. The P320's modular FCU system allows for complete frame changes, a flexibility the Glock lacks, requiring the end-user to choose between the polymer grip of the G17 or the metal grip of the P320 immediately. For a detailed analysis of modular platform compatibility, review my article on AR-15 Lower Receiver Machining Tolerance.
What does it weigh and what are the dimensions?
Unloaded weight is 22.22 ounces (630 grams), with an overall length of 7.95 inches and a slide width of 1.34 inches. These dimensions define its handling as a full-size duty pistol; it cannot be concealed as easily as a Glock 19, which has a 1.26-inch shorter grip height. The 4.49-inch barrel contributes to a sight radius of 6.49 inches with stock sights.
Who is this NOT for?
This pistol is not for individuals seeking a deep concealment weapon or those who do not intend to use an optic. Buyers prioritizing maximum concealment should examine the Glock 43X, which is over 2 inches shorter in height and 3 ounces lighter. It is also a poor choice for shooters averse to the Glock grip angle, a non-adjustable ergonomic element.
What's in the box?
The box contains the pistol, one 17-round magazine, a MOS mounting kit with adapter plates, a bore brush, a cable lock, and a user manual. The mounting kit includes four specific adapter plates to interface with most micro-red-dot footprints, but notably lacks a plate for the Shield RMSc pattern, a common omission requiring a separate $40-70 purchase.
Is the Glock 17 Gen 6 MOS worth it at $557.99?
Yes, at $557.99 it delivers a factory, warranty-backed optics-ready platform at a lower price point than a Gen 5 G17 with comparable aftermarket milling. The ~$120 premium over a non-MOS Gen 5 is justifiable for the OEM machining precision and retained slide structural integrity. For those seeking forced-reset system integration, this platform is a candidate for our Freedom Finger™ - M&P® 2.0 design philosophy, albeit with a different mechanical architecture.
Specs at a glance
Pros & cons
What works
- 4.49-inch cold hammer-forged barrel provides a 6.49-inch sight radius for precision.
- Factory MOS slide milling retains full OEM structural warranty, unlike aftermarket cuts.
- Weighs 22.22 oz unloaded, distributing mass for manageable 9mm recoil impulse.
- Direct compatibility with Gen 5 aftermarket components and holsters, ensuring broad support.
Trade-offs
- MOS adapter plates require precise installation and thread-locking; improper torque voids optic warranty.
- No included plate for Shield RMSc footprint optics, necessitating a separate ~$55 purchase.
- Gen 6 grip texture is more aggressive than Gen 5, which may irritate skin during concealed carry.
- The trigger pull weight averages 5.5 lbs, a known point for aftermarket replacement.
Key attributes
| Caliber | 9mm Luger |
| Barrel Length | 4.49 in |
| Overall Length | 7.95 in |
| Width | 1.34 in |
| Height | 5.47 in |
| Weight (Unloaded) | 22.22 oz (630 g) |
| Magazine Capacity | 17 rounds |
| Sight System | Factory Glock Sights, MOS Optic Ready |
Specifications
| Caliber | 9mm |
| Barrel Length | 4.49" |
| Magazine Capacity | 17 rounds |
| Optics System | MOS (Modular Optic System) |
Best for
- duty
- competition
- personal defense
Frequently asked questions
- Is the Glock 17 Gen 6 MOS compatible with all Glock Gen 5 holsters?
- Yes, holster compatibility is 100% with standard Gen 5 Glock 17 holsters. The external dimensions, including slide width and rail geometry, are identical. Holsters indexed off the trigger guard or light will fit without modification.
- Does this model fit a Trijicon RMR Type 2 optic directly?
- No, direct mounting is not possible. It requires the use of the MOS system's included adapter plate #2. Installation requires properly torquing the four provided screws to 15 inch-pounds with a thread-locking compound, following Trijicon's specific protocol.
- What is the lead time for shipping on this item?
- Current processing and shipping lead time is 3-5 business days for in-stock items. Shipments are made via FedEx Ground and UPS, with transit times of 2-5 additional business days depending on destination. Expedited shipping options are available at checkout.
- Can I install a Freedom Finger™ style forced-reset trigger in this Gen 6?
- The Freedom Finger™ system is engineered for the M&P® 2.0 platform and is not mechanically compatible with Glock's design. The Glock platform uses a different sear engagement geometry and does not currently have a forced-reset system developed by FRT Triggers.