$423.99
8 in stock
Online inventory may differ from in-store availability.
Quick turnaround so you get your gear sooner.
Trusted checkout with industry-standard protection.
Keeping Traditions Alive Since 1953
Secure Transactions provided with 
Most striker-fired pistols these days come wrapped in polymer, which is fine. But if you've always preferred the feel of metal in your hand, the STK100 from Rock Island Armory is worth a serious look. RIA took the proven mechanical layout of the Glock Gen 3 platform and built it around a patent-pending aluminum frame machined from 7075 alloy, giving it a grip angle closer to a 1911 than a Glock. The result is a pistol that points more naturally for a lot of people, feels more substantial in hand, and soaks up recoil noticeably better than a comparable polymer-framed gun.
The slide is machined from 4140 steel with front and rear serrations, plus lightening cuts on the top and sides to manage overall weight without sacrificing that all-metal rigidity. The slide comes with an integrated rear sight on a removable optic cover plate, making it optics-ready right out of the box when you're ready to mount a red dot. A front Picatinny-style rail handles lights and lasers, the beavertail provides solid hand placement, and the aggressive grip texturing keeps things locked in even during fast drills.
One of the more practical perks of the STK100 is that it takes standard Glock 17 Gen 3 double-stack magazines, so sourcing extra mags is never a headache. Controls mirror the Gen 3 layout too, so if you've run a Glock before, the learning curve here is essentially zero. Field-stripping follows the same process as well. There's no manual external safety, but the trigger features the familiar passive blade safety, and internal striker and drop safeties are built in.
At the range, this gun flat-out shoots well. Multiple reviews and range sessions have noted that the added weight of the aluminum frame and steel chassis translates directly into reduced muzzle flip and faster follow-up shots. The 4.5-inch barrel and 17+1 capacity round out a package that works equally well for home defense, range use, or getting into the competition scene without spending a fortune.
Yes, the STK100 is compatible with Glock 17 Gen 3 double-stack magazines. This is a big practical advantage since G17 mags are widely available from a large number of manufacturers at a range of price points. It means you're never stuck hunting for proprietary magazines.
Rock Island Armory built the STK100 around a patent-pending modular aluminum frame machined from 7075 alloy as a deliberate design choice. The added weight compared to polymer helps absorb recoil and reduces muzzle flip, which translates to faster and more comfortable follow-up shots. It also provides a more substantial, premium feel compared to most striker-fired pistols in this price range.
Yes. The rear sight is integrated into a removable cover plate on the slide, which can be swapped out to mount a compatible red dot optic. The fixed 3-dot irons work perfectly out of the box, and the optics-ready setup gives you a clear upgrade path when you're ready.
No, there is no external manual safety on the STK100. It uses the same passive safety approach common to most modern striker-fired pistols: a blade safety built into the trigger face, plus internal striker and drop safeties. This keeps the manual of arms simple and consistent.
The STK100's grip is machined at the 1911 grip angle, which is noticeably different from the steeper angle on a Glock. For people who've spent time with 1911s or just find that Glocks don't point naturally for them, the STK100 can feel like a much better fit right out of the box. It's one of the more distinctive features of the design.
Because the STK100 is built around a Glock Gen 3 mechanical layout, a wide range of Gen 3-compatible parts can work with it, including sights, barrels, and trigger components. Magazine compatibility with G17 Gen 3 mags also means no shortage of options there. It's worth confirming fitment with a gunsmith before swapping internal parts, but the aftermarket ecosystem is a real benefit of this platform.
| UPC | 4806015566250 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | 56625 |
| Action | |
| Barrel Length | 4.50" |
| Caliber/Gauge | 9mm |
| Capacity | 17 |
| Color | Black |
| Number of Magazines | 1 |
| Product Type | Striker Fired |
| Safety | No Safety |
| Shipping Weight | 3.3 |
| Sights | 3-Dot Sights |
| Sights Type | Contrast |
| Slide Description | Serrated Black Anodized Aluminum |
| Units per Box | 1 |
You must be logged in to post a review.
Reviews
There are no reviews yet.