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The G48 MOS sits in a category Glock figured out well: compact dimensions, a full grip, and a frame slim enough to carry all day without printing. At just 1.1 inches wide and roughly 20.74 ounces unloaded, it shares the same 7.28-inch overall length and 4.17-inch barrel as the G19, but sheds the bulk that makes double-stack compacts harder to conceal. That combination of G19-length sight radius in a Slimline frame is the whole pitch, and for a lot of people it hits exactly right.
The MOS version adds two things the standard G48 doesn't have: a factory-milled slide cut for micro red dots and the Glock Slim Mounting Rail machined into the dust cover for a compact weapon light. The optic cut uses an RMSc-style footprint, which works with a wide selection of micro red dots from Shield, Holosun, Swampfox, and others without needing custom milling or adapter plates. Just note that not every optic footprint is the same, so confirm compatibility before you order glass. The rail takes lights like the Streamlight TLR-7 Sub without adding significant width to the gun.
The nDLC-treated steel slide resists corrosion and wear better than older Glock surface treatments, including holding up in humid or wet conditions. The GLOCK Marksman Barrel features tighter polygonal rifling compared to older Glock barrels, and paired with the 6.30-inch sight radius, the gun is capable of consistent accuracy at typical defensive distances. The frame pulls in elements from the Gen5 Slimline series: a built-in beavertail, shortened trigger distance, a slightly flared magwell, precision-milled front slide serrations, and a reversible magazine catch. Glock's Safe Action system keeps things simple with three passive, independently operating mechanical safeties and a consistent 5.5-pound trigger pull from the first round to the last. Field stripping requires no tools and takes seconds, which makes cleaning and maintenance about as straightforward as it gets.
The G48 MOS uses an RMSc-style footprint, which is a smaller cut than what you'll find on full-size Glock MOS models. Compatible optics include the Shield RMS/SMS series, Holosun 407K and 507K, and Swampfox Sentinel, among others. It's worth confirming the mounting bolt length before installing any optic, since bolt length mismatches have caused fitment issues with certain models. No adapter plates are included with the pistol.
Yes, this specific model (PA4850203FRMOS) ships with two 15-round factory Glock magazines. Earlier G48 variants included 10-round magazines, but this newer configuration includes the higher-capacity factory mags right out of the box, closing the capacity gap that previously made some people hesitate on the platform.
The G48 MOS is nearly identical to the G19 in overall length and height, but it's noticeably slimmer, measuring about 1.10 inches wide versus the G19's wider double-stack grip. That reduction makes a real difference for concealed carry, particularly with IWB and appendix-style holsters. The tradeoff with standard magazines is fewer rounds, but with factory 15-round mags that gap has effectively closed on this model.
Yes, the MOS version includes the Glock Slim Mounting Rail on the dust cover, which is compatible with compact weapon lights designed for the Slimline rail profile, such as the Streamlight TLR-7 Sub. This is a dedicated Slimline-format rail, so full-size lights designed for standard Picatinny rails won't fit correctly. Make sure any light you're considering is specifically listed as compatible with the Glock Slimline rail.
The G48 MOS has strong holster support from most major makers including Safariland, Vedder, Tier 1 Concealed, and others. Because the MOS version has the optic cut and the rail, you'll want to make sure you're buying a holster designed specifically for the G48 MOS rather than the standard G48, especially if you plan to run an optic. Most manufacturers offer MOS-specific versions that accommodate mounted red dots.
It's a solid option for a wide range of experience levels. The Safe Action system is simple and intuitive with no external safety levers to manage, and field stripping for cleaning requires no tools. The grip is full-length, which helps with control compared to subcompact pistols, and the consistent trigger pull makes it easier to build good habits. Newer shooters should budget range time to get comfortable with recoil management, which can feel a bit snappier on slim-framed pistols than on heavier guns.
| UPC | 764503073403 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | PA4850203FRMOS |
| Action | |
| Barrel Length | 4.17" |
| Caliber/Gauge | 9mm |
| Capacity | 15 + 1 |
| Color | Black |
| Length | 5.47'' |
| Magazine Included | 2 x 15-Round |
| Model | |
| Number of Magazines | 2 15 rd. |
| Product Type | Striker Fired |
| Safety | Firing Pin/Trigger Block |
| Shipping Weight | 3.2 |
| Sights | Fixed Sights |
| Slide Description | Optic Ready/Serrated |
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