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Although Glock’s lineup of handguns features mostly impressive firepower – enough to get the job done in so numerous instances – some law enforcement officials in the contemporary 1990’s-early 2000’s found that Glock’s official issue 9×19 pistols, such as the Glock 17, 19, 26, or 43, were not adequately taking down criminals.

This led to a bit of a puzzle on the part of Glock, in that the company was confronted with the decision to either concede that its existing handgun line wasn’t up to par for some officers & develop/adopt a new caliber or ignore the pleas for a more powerful Glock. Glock settled on the former, & the result we finished up with is the Glock 37, a .45 G.A.P. (Glock Automatic Pistol) using cartridge formed to match the strength of the .45 Auto guns while maintaining a compact form factor & exceptional ease of use. The .45 GAP, while offering the same ability as the .45 ACP, is made shorter to fit a small handgun.

 

This is because Glock had no purpose of drawing a contrast between the G37 & their other, more compact handguns, or invite parallels to the .45 Auto Glock models – the 21, 30, & 36. The Glock 37 was a grand achievement in that Glock continued to combine effective stopping power & compact form, this time on an even higher level – it’s not tough to see why the New York State Police Department selected the gun soon after its introduction to the business. You’ll understand the importance of the Glock 37 as well after reading this, our Glock 37 Gen 4 Review!

 

Glock 37 Specs

Caliber / System

.45 G.A.P.

Dimensions
Height: 140 mm / 5.51 in.
Length: 204 mm / 8.03 in.
Width: 30.00 mm / 1.18 in.
Length Between Sights: 165 mm / 6.49 in.
Barrel Height: 32 mm / 5.51 in.
Barrel Length: 114 mm / 4.48 in.

Weights

Loaded: 1005 g / 35.48 oz.
Unloaded: 820 g / 28.95 oz.

Trigger Pull / Travel

Trigger Travel: ~12.5 mm / ~0.49 in.
Trigger Pull: ~2.5 kg / ~5.5 lbs.

Magazine Capacity

standard: 10

Barrel Rifling / Length of Twist
Length of Twist: 400 mm / 15.75 in.
Barrel Rifling: right hand, octagonal

Glock 37 Build

As previously asserted, the thought behind the Glock 37 was to acquire a firearm which could accommodate .45 ACP-like cartridges without compromising in form factor. To achieve this, Glock’s unique.45 GAP cartridge is shorter than the traditional .45 ACP, but slightly shorter, & uses a small pistol primer.

The G37 practices the same frame as the 9 x 19 Glock pistols but uses a broader sight to accommodate the larger diameter of the .45 GAP, & the glock 37 Magazine are the identical dimensions as those used in the 9 x 19 Glock’s. In typical Glock fashion, the G37 is composed mostly of the patented Glock polymer-blend, which makes for a sturdy, durable, resilient, & long-lasting gun. As we are evaluating the Gen 4 version of the Glock 37, we should note that all of the typical Gen 4 bells & whistles are included – the modular back straps, the enlarged & reversible magazine catch, double recoil spring assembly, & the new & improved textured grip.

 

Already known for their build status, the dual recoil spring assembly, in particular, ensures an even longer-lasting Glock – for me, the G37 has held up over the course of two years nearly correctly.

 

Glock 37 Shooting

The selling point of the Glock 37 is in the caliber & stopping the power of the gun, which means that this section of our review is the most pivotal. I can confidently state that after extensive G37 use, I can conclude that it is one of the most secure handguns I’ve ever had the joy of using. Although the 37 is slightly more challenging to manage than its siblings in the Glock family (as is to be expected, given the larger caliber), it is still plenty accessible for novices as well as experienced gun owners.

Accuracy when shooting is as good as can be expected – I performed too with the .45 as I did with guns of different br&s & lesser calibers, leaving two-inch groups at roughly 25 yards. The gun is comfortable to hold (& highly customizable for those who do not get the factory grips agreeable), & quickly launches itself to the head of the pack of the .45 Auto ‘family’ – this is most unsurprising, given that Glock seems to accomplish this feat in every gun market niche it enters.

Glock 37 Magazine

The standard capacity of the Glock 37 magazine is 10, with the option for a +1 magazine extension which protrudes from the mag well just a little, settling on form factor slightly. Again, the Gen 4 version of the Glock 37 has a handy, extended magazine release & well which is also reversible. This makes for a hell of a natural experience regarding loading & ejecting magazines, allowing users to switch the catch to the left or top side of the handgun. Not unlike other handguns, the 10-rounds of GAP will either be enough to capture your gun demands, or they won’t: I know some folks who couldn’t live without the ability of 17 in the Glock 17’s, while I am just fine with 10. Figure out what it is that you need out of your handgun, & adjust accordingly. Only recognize that the laws of nature dictate that a higher caliber handgun either be more significant or feature a (relatively) smaller magazine to accommodate the rounds.

Glock 37 Sight

Oh yes, it’s that time of the study again. Time to lament the shortcomings in the Glock factory sights before gleefully recalling you that, being a Glock gun, the G37 sights can be swapped for a variety of variable new & upgraded sights! Until Glock does something about underwhelming sights, we will continue to rightly label them as one of the few shortcomings in an otherwise remarkably pleasing gun formula. In the meantime, you can either buy a new set of sights, or make do with the front dot & rear “u” marked glock 37 Sights – they’re not great, but they’re not terrible either.

Glock 37 Conversion

I’ve seen some people in various places ask about conversion facilities shortly after purchasing the Glock 37. The problem that some people encounter here is that they are buying the Glock 37 thinking that it will accept .45 ACP ammunition without understanding that, as described, the .45 GAP is a specially-made cartridge & that the Glock 37 is not compatible with .45 ACP rounds. I’m just going to state this now to make it clear: The Glock 37 cannot be converted in any safe or official capacity, & the Glock 37 only accepts the ammunition that was made for the Glock 37. This is a sad reality to take given the wealth of options that are available in ammo in other Glock pistols, but it is a reality that people need to receive nonetheless. This is a result of Glock making a firearm that allows its unique cartridge. Therefore, if you’re perhaps interested in purchasing a Glock 37, I cannot recommend giving the gun a try before purchasing highly enough. Appreciating & enjoying the .45 GAP cartridge is imperative for would-be 37 owners – it is necessarily a pre-requisite. Try the gun before buying it & you won’t have to worry about trying to convert the weapon at some later point – you’ll know it’s not the gun for you.

Glock Safe-Action System

Given the fact that the Glock 37 was formed thanks in large part to security concerns of law enforcement officials, it only fits that the G37 itself has excellent safety features – which it does, in spades. Like the another Gen 4 Glock guns, the G37 takes advantage of Glock’s 3-point “Safe Action System” – a three-part safety designed to neutralize the most common risks associated with this handguns. This involves, for starters, the Glock trigger safety – a level of the trigger of the gun that required to be engaged simultaneously with the trigger for the trigger to fire. The spring-loaded firing pin safety ensures that the firing pin is blocked from moving forward unless the trigger is being pulled. Finally, the drop safety of the gun provides that no unwanted firing takes place in the event of an unexpected drop. In addition to these features, the superior build of the G37 is an insurance policy in itself against any unsafe ends from general handgun degeneration, tear, wear, & aging. You won’t find a safer.45 handgun than the G37.

Glock 37 Accessories

Unlike the unfortunate ammo limitations which were described earlier, the Glock 37 has an overwhelming number of accessory & customization options for their buyers. From grips, to slide back platers, to recoil springs, to holsters, to sights, there are some ways to improve & alter your Glock 37 to help make your G37 experience a more accessible one. Here are our Top-5 Glock 37 Accessories:

1. Talon Grips

37 aA single-piece wraparound adhesive grip, these Talon grips create a more simply grip-able surface of the gun which make a safe, comfortable firing activity even safer & more comfortable. Available in both rubber & granulated texture & just 0.5 mm thick, these grips manage to maintain the slip & comfortable to hold build of the gun while only enhancing grip-ability (all of the real, none of the bad). I used these grips for the Glock 17 & 19, as well as for the Glock 37, & I have to say that the increase in comfort when shooting made a tremendous amount of difference – the Glock 37 factory grips are quality, but the talons are over-the-top great.

2. Trijicon HD Night Sights

37 after covering the less-than-stellar sights included on the Glock 37, you didn’t believe we’d let you finish the investigation without recommending an excellent replacement set, did you? Trijicon knows sights as well as anyone, & night sights in particular – night sights like the Trijicon HD Night Sight Set for Glock Pistols. Featuring a profoundly visible melanistic front sight post with glow-in-the-dark paint, these Trijicon sights are excellent for target acquisition in the home defense situation in particular. Easy to install, the subdued, u-notch rear sight & front post can enhance the Glock 37 experience – make these your go-to Glock sights!

3. Black Rear Cover Slade Back Plate

37 for those who find Glock guns to be a little stale or stiff regarding their look or aesthetic, there are ever swappable back plates. An easy & simple way to personalize your Glock 37, back plates are easily installed, affordable, & varied enough to get the perfect fit for you (you could even design own with an online tutorial). NDZ Performance, in nice, makes a good set.

4. Stainless Steel Competition Recoil Spring

37 9Looking for different weights in your gun than a Glock 37 provides? You’re in luck. You can tune the spring to your specific shooting level, skill, & needs by using drop-in, stainless steel guide rods made by Glock. Available in 5 different weights, these are an excellent option for gun owners who are not just feeling that the G37 is optimal for their shooting profile.

5. BlueFire 2-in-1 Flashlight & Laser Sight

The Glock 37 is an excellent option for home defense & self-defense goals, but that doesn’t mean that the G37 defense action can’t be made even better. Night sights will help with target acquisition at night & in low-light situations, but when targets & areas need to be better illuminated, lights & glock 37 Laser sights are a great option. BlueFire makes an excellent 2-in-1 combo that gets the job done for anyone who wants to be extra cautious with the defense firearm.

Glock 37 Holster

Glock guns are some of the most popular firearms for open & concealed carry in the world, & it’s no surprise as to why – the compact form of Glock guns make them easy & downright comfortable to carry. For the sake of safety, & increased comfort, though, moving your Glock in a holster is the way to go. There are some great holster options for the Glock 37, & I recommend the Fobus Roto Holster or the Blackhawk 410513CT-R, which are two established crowd pleasers. It’s always best, however, to get the Glock 37 holster that you see most comfortable & safe.
Conclusion

The Glock 37 is a radical weapon that took the stopping power of the .45 ACP, put it in a compact handgun, & managed to keep the firing & control ability to a reasonable level. Is the Glock 37 a perfect gun, without limitations? Not. For those of you who want .45 ACP-level shooting in a compact handgun, however, & in the world-class build quality of a Glock, the G37 is as best of a decision as you’re going to get. Try the glock 37 Gen 4 out at the local range today to see if it works for you!

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