FOG HORN
July 2020 Twobirds Flying Publications
Glock Inc.’s Threaded Barrel Kit
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Glock Inc.’s Threaded Barrel Kit
Glock Inc.’s Threaded Barrel Kit By: Sal Palma
2020
scouring nearly half the planet, I was able to locate a Glock threaded barrel kit. Glock’s threaded barrel kit ships with three components. 1. An extended and threaded barrel in M9 x 75 RH 2. A .500 x 28 adapter. This will allow you to use a U.S. suppressor threaded for ½ x 28 3. A thread protector to fit the barrel not the adapter.
What could be better than a Glock announcement of a 15 round Glock 44 magazine, availability of their threaded barrel kit for the .22LR G44 but sorry, Glock will be Glock. This June, I had the opportunity to review the Glock 44, Glock Inc.’s only .22LR. During that review, I used a variety of .22 caliber ammunition and found that the pistol functioned reliably with only one failure attributable to the Aquila 22 Super Colibri powderless ammunition; it would not cycle the action. As I outline in my review, this was the expected results so, succinctly stated, the Glock 44 functioned flawlessly. At the time, I was not able to test suppressed operation due to the availability of threaded barrels. However, after
Installation was characteristically simple. Take down the pistol, remove the recoil spring, lift out the standard issue barrel and drop in the threaded barrel.
The next step was to head to the range. In all frustration it is easier to get a same day appointment with a proctologist that it is to get uninterrupted range time, how I long for those days, but be that as it may…
Copyright 2020, Towbirds Flying Publications. All Rights Reserved.
Glock Inc.’s Threaded Barrel Kit For my range session, I used Remington’s 22 Subsonic, this is a 40gr hollow point, .22LR and exiting the barrel at 1050 fps. It’s a good quality offering from Remington that functioned flawlessly in the unsuppressed Glock 44. In the suppressed G44 the story was slightly different.
2020
The standard issue barrel weighs 2.96 ounces. Compare that with the threaded barrel which weighs 3.13 oz.
Out of 20 rounds fired, I had 3 failures to eject; I experienced no other issues and the remaining 17 functioned flawlessly. But before I fault the ammunition, recall that I fired the same ammo through the unsuppressed G44 without a hitch. As it stands, as of this writing, I feel that the failures were related to the increase mass of the threaded barrel and suppressor so the slightest variation in the ammo could cause the problem. Here’s what I think is going on. The Glock 44 is not a fixed barrel design the breech unlocks so the action needs to overcome the weight of the suppressor. In centerfire pistol calibers, this is accomplished by incorporating a Nielsen device in the suppressor. The spring in the device supplies a reward impulse that overcomes the weight of the suppressor. So, let’s take a look at the mechanics
Next we add the .500 x 28 adapter which weighs 0.45 oz.
Finally, we add the suppressor weight itself which measures at 3.26 oz.; doing the math, this is how things look. In the unsuppressed pistol, the action sees a weight of 2.96 oz. while on the suppressed pistol the weight is 6.84 oz. This is a 131.1% increase in weight of the action. When you consider the weaker blowback from a subsonic round, with the increased weight and the lack of a fixed barrel, it’s not surprising to get these results. Should you not suppress your Glock 44? Absolutely not but you may
Copyright 2020, Twobirds Flying Publications, All Rights Reserved
Glock Inc.’s Threaded Barrel Kit experience minor ammunition.
issues
with
2020
subsonic
If you can find the Glock threaded barrel kit for the G44 plan on spending anywhere from $155 to $199. Glock Inc. lists them at $155 but they haven’t had any in stock since introduced. -SP
Manufacturer Specifications
Barrel Length: 4-1/2" Barrel Thread Pitch: M9 x 0.75 RH Brand: Glock Caliber: .22 LR Finish / Color: Black Firearm Type: Pistol Material: Steel Models Fit: Glock G44
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