Perhaps you already have a Sig Sauer P320 and are looking to get a weapon mounted light. While there are lots of good options on the market, the Inforce APLc is a popular one because of a few reasons.
The light itself is small, and has a mostly snag-free design. This is an important carry consideration as designs with big levers or arms can snag on clothing and necessitate a larger holster to carry. The light has 200 lumens, which is adequate for most situations (I would advocate carrying a handheld light as well for situations where you don’t want to point your pistol at something you wouldn’t want to shoot — but that’s a whole different topic), and the runtime is adequate at 1.5 hours. Finally, the switches are available on both sides, allowing you to manipulate with strong hand or reaction hand. This all adds up to a very popular package for users.
But there are 2 different versions of the APLc. There is an “APLc” and “APLc for Glock“. The difference between the 2 is not immediately obvious, but if you look close, you’ll see that the APLc for Glock places the screw (which goes through the rail slots) further forward than the regular APLc.
This might make you think that you must purchase the APLc for your Sig Sauer P320. However, that is not the case.
As you can see from the above pictures, the screw may be positioned differently, but the light appears to be mounted in the same position. Why is this? It’s because the APLc for Glock and the APLc simply have their screw travel through different rail slots; the rail slot spacing is the same as the spacing difference between the different versions of the APLc.
Why is this important? Say you have a number of different pistols you may choose to use your weapon mounted light with? Perhaps you’re not sure if you’re going to run your APLc on your Sig or your Glock? You can purchase the APLc for Glock, and use it on either pistol. Similarly, perhaps you’re wanting to switch your light between the P320 and the HK VP9sk (the APLc for Glock won’t fit this HK), then get the regular APLc and you’re covered.
While this article is in relation to the popular Sig Sauer P320, it likely applies to a number of different pistol models. If you choose carefully, you can maximize the interchange of your APLc on various pistols.
Recently, I tried our Gen5 G19 with an Inforce APLc in a Werkz Minimalist 2.0 holster designed on the previous generation Glocks. It didn’t fit properly. Here is what I found out.
First, a bit of background. Most holsters fit tightly around the pistol and (if attached) light or laser, especially when fully holstered. This prevents the pistol from moving around a lot and gives proper retention and feel. For a Kydex holster, key areas of retention are around the sides, where the Kydex has “give”. This allows the Kydex to flex in for retention and flex out on draw. Near the top of the slide or around the bottom of the holster, there is less give because this is where the holster comes together. Further, the Kydex is quite strong around those areas. For a holster to fit properly, the distance from the top of the slide to the bottom of the light is critical. And that is where the problem is for the Gen5 Glock 19 we tried.
I tested the holster with the Gen4 G19, and it fit properly. I also tested the holster with the Gen5, and it fit too tightly. So tightly in fact that I would have had a difficult time drawing cleanly. This wasn’t an item I could resolve by adjusting the retention screw, and it wasn’t because the holster didn’t have clearance for the ambi slide release. So, I measured my pistol in a number of places, and here is what I found.
Top of Slide to Bottom of dust cover – front of trigger guard
Top of Slide to Bottom of dust cover – at rail slot
Top of Slide to Bottom of dust cover – end of muzzle
Frame Width – front of trigger guard
Frame Width – at rail slot
Frame Width – end of muzzle
Top of Slide to Bottom of IAPLc
The cells highlighted in yellow are the most concerning. It seems that the Gen5 Glock puts the light almost 1mm lower than the previous generations. This small change can result in a holster that fits properly on a previous generation NOT fit properly with the Gen5. Due to the importance of that dimension in the holster, it is quite likely that the Gen5 holsters will require a different design — not just for the slide release, but also for the lower rail position.
Werkz is working on updates to their holsters to accommodate, and will be distinguishing between the Gen5 and previous generations for custom holsters. But this is something you should be aware of when purchasing your Gen5 Glock, and especially if you’re purchasing a special holster just for your Gen5. Make sure it will work with your combination.
Here is more information in a video…
One final thing: Werkz is now making Gen5 Glock 19 holsters. These holsters are specifically designed for and tested with the Gen5 Glock 19.