$68.99
3 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 
The AmeriGlo GL391 is a set of XL Tall, suppressor-height iron sights made for Glock shooters running a slide-mounted red dot or a can up front. The elevated height gives you a clean co-witness through your optic window, so if your dot ever fails, fogs up, or runs out of battery, you already have a proven set of irons ready to go. The front sight carries a green tritium lamp wrapped in a bright LumiGreen outline, paired with a single green tritium dot in the rear, all sitting in a black steel frame that holds up to real-world carry and range abuse.
The GL391 uses AmeriGlo's i-Dot layout, which trades the usual three-dot arrangement for a dot-over-dot picture. You stack the glowing front dot right on top of the single rear dot and you're lined up vertically, no fumbling with three separate dots in the dark. It's a fast, intuitive system that a lot of folks find quicker to pick up under stress, and the tritium keeps both lamps lit 24/7 whether the sun's up or not.
These are cut for most Glock Gen 1 through Gen 5 models, including MOS slides, though they aren't meant for the slim 42 and 43. The front blade runs about 0.315 inches tall with a 0.125-inch width, and the rear sits at roughly 0.394 inches overall with a squared notch. That extra height is what lets the irons clear the optic and line up through the glass, and it's also tall enough to work over most suppressors.
AmeriGlo has built a strong reputation among people who want serious night sight performance without paying premium-brand prices, and the GL391 fits right into that lineup. Install is straightforward if you've got a front sight tool and a rear sight pusher, and once they're zeroed you're set for defensive work, low-light shooting, and everything in between.
Yes, that's exactly what these XL Tall sights are built for. The suppressor-height design raises the irons enough to line up through most slide-mounted red dot windows, giving you a co-witness so you can still aim if the optic fails or dies. They also serve as solid backup irons and clear most suppressors up front.
The GL391 is cut for most Glock Gen 1 through Gen 5 pistols, including MOS-equipped slides. The main exceptions are the slim 42 and 43, which use a different sight footprint. If you're unsure about your specific model, it's worth double-checking the slide cut before ordering.
Instead of three separate dots, the i-Dot uses a single rear tritium dot that you stack the front dot on top of, giving you a fast dot-over-dot vertical alignment. Plenty of people find it quicker and less cluttered than lining up three dots, especially in low light where three-dot setups can get confusing. You simply put the front sight in the notch and dot the i.
They do. Both the front and rear use tritium lamps, which glow on their own around the clock without needing to soak up light first. On top of that, the LumiGreen outline on the front sight is a photoluminescent paint that pops in daylight and low light to pull your eye to the front quickly.
| UPC | 644406910978 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | GL391 |
| Style | i-Dot |
You must be logged in to post a review.
Reviews
There are no reviews yet.