I think it would be a waste of time and wouldn’t change a thing. Look how long it took Gaston to give us a single stack 9mm.

 

From my experience, the 5.7 was extremely popular when it first come out.

The reason being is, at that time the ammunition penetrated bullet proof vest.
Shortly after, this ammunition was banned in the USA.
FN 5.7 cost is about $1200.00 today.

If you research the 22 mag vs 5.7 velocities they are very close. Around 2000 fps.
Ammo costs is also a consideration.
5.7 ammo is about $20- 25 per box of 50 and 22 mag ammo is about $10 to 15 per hundred.

IMO, the lack of demand for a Glock 5.7 would not support Glocks manufacturing costs.

The 5.7 ammo is too expensive for target shooting unless you reload. Plus, 9mm, 40, 45 pistol calibers are most commonly used for self defense.

In closing , remember the 5.7 is often referred to as a glorified 22 caliber.
22 LR CCI high power cartridge is advertised at 1600 fps.



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From my experience, the 5.7 was extremely popular when it first come out.

The reason being is, at that time the ammunition penetrated bullet proof vest.
Shortly after, this ammunition was banned in the USA.
FN 5.7 cost is about $1200.00 today.

If you research the 22 mag vs 5.7 velocities they are very close. Around 2000 fps.
Ammo costs is also a consideration.
5.7 ammo is about $20- 25 per box of 50 and 22 mag ammo is about $10 to 15 per hundred.

IMO, the lack of demand for a Glock 5.7 would not support Glocks manufacturing costs.

The 5.7 ammo is too expensive for target shooting unless you reload. Plus, 9mm, 40, 45 pistol calibers are most commonly used for self defense.

In closing , remember the 5.7 is often referred to as a glorified 22 caliber.
22 LR CCI high power cartridge is advertised at 1600 fps.



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Sorry to dig up an old thread but I found it in a Google search.

There's so much misinformation in this comment I felt I had to reply.

For starters, the ammo that can easily penetrate Level 3A armor isn't illegal at all. FN restricted their SS190 and SS198LF rounds to military/LE but it's still easily found online for civilian sale. Not only that but there are numerous other options available from both Elite Ammunition and Vanguard as well as even the new Speer Gold Dot that will penetrate 3A out of a Five-seveN or Ruger 57 and still leave a nasty wound channel in ballistics gel (there and videos on YouTube by Buffman proving it).

It's time to get over the "it's just a glorified 22 mag" thing. First of all, 22 mag is rimfire, nobody in their right mind would carry a rimfire cartridge for SD. Secondly, you're taking 22 Mag & 22lr advertised velocities from rifle barrels and comparing it to ~5" pistol barrels for the 5.7x28. The discontinued Elite Ammo S4M round is clocked between 2500-2600 fps, weather depending, out of a Five-seveN and there are multiple other current production options well over 2000fps out of a 5" barrel.

Most of the wounding from the 5.7x28 is based upon its fast, light bullet that tumbles after a few inches creating massive destruction considering the size of the projectile. Most rounds will do this with or without going through a vest. Obviously the SS197 and American Eagle rounds are range ammo but just about every other round out there does what the 5.7 was designed to do. Penetrate armor and cause a mess on the other side.

With the growing number of manufacturers bringing out their own 5.7x28 guns in the last two years (Ruger 57, Diamondback DBX57 and one from KelTec) i think it'll only make the round become more popular and cheaper in the long run. Not to mention the fact that it was standardized by NATO just a few weeks ago. Google how many NATO Standardized rounds there are, that alone might say something for the 5.7x28. As much as I love my Five-seveN, if Glock developed a gun clambered in 5.7x28 I'd sell my FN and buy two of the Glocks right away.

 

357 sig can be a comparable loading with the right bullet. Like the Underwood 65 grain extreme defender @ 2100 FPS

 

https://www.glocktalk.com/threads/five-seven-glock.1758846/

 

I don’t see Glock tackling the 5.7x28

 

They should

 

You can buy commercial 10mm 60 gr. @ 2,400 FPS. 9x25 90 gr. Barnes @ 2,200 FPS. I'd guess that 65 gr. Barnes in 9x25 could reach over 2,500 FPS. These are solid copper projectiles that will penetrate bullet proof glass and vests. The recoil on these super lightweight bullets is minimal with very fast follow ups. I've shot the 10mm and 9x25 loads in addition to a 10mm 140 gr. Barnes. There is a video of that load penetrating thick bullet proof glass.

So... I'd say you have a much better all around pistol and cartridge without having to resort to 5.7

 

Practical probably not, cool most definitely! Plus if anyone wanted a pare for their p90 then they'd have an affordable option.

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These are the 90 gr. Barnes which are much longer than typical lead bullets with copper or brass jackets.

My #'s were off a bit.

Even though 10mm and 9x25 #'s from the smaller places are usually from 6" barrels, 10mm and 45 are always chrono'd from 5" barrels and I believe the 5.7 is chrono'd from a 5.5" barrel.

 

There's a cartridge that is ballistically superior to the 5.7 FN and that is the 22 TCM 9r

People often quote muzzle velocities for the 26 inch barreled P90 or the 16 inch barreled PS90 and attribute those velocities to the FN pistol.

But with a 40 grain bullet, the FN 5.7 only does 1690 fps from a 6.5" pistol barrel while the 22 TCM 9R will do 1800 fps out of a 4 inch conversion barrel in a Glock 19 and slightly more in a Glock 17.

The only advantage the 5.7 has over the 22 TCM 9R is that the 5.7 uses a longer 40 grain projectile with a better ballistic coefficient which is only an advantage past 150 yards.

Additionally, the regular 22 TCM uses a projectile that is les blunt and produces 2000 fps out of the 5 inch barrel of the rock Island 1911-based pistol.

A complete drop-in kit is available from armscor and just the barrel is available from Ventura munitions. the shortened TCM9R ammo will feed from standard Glock 9mm magazines.

https://www.ableammo.com/catalog/rock-island-armory-glock-gen-tcm-conversion-kit-58017-p-144428.html

https://armscor.com/firearms/ria/conversion-kits/glock-conversion/

https://www.venturamunitions.com/rock-island-armory-g19-22tmc9r-barrel-conversion-kit/

 

I was going to say a 5.7 conversion would be cool... but after reading Borg's post, I'd go with the TCM before the 5.7, were I inclined to do anything at all.

 

First I am not impressed with the whole idea.

HOWEVER.... This idea would open up an entirely new frame size which could be used to house a 7.62X25 Tokarev round.

A round that in my opinion has a great deal of potential for development.

 

PSA is selling a 5.7 version of their gen3 Glock clone.

https://palmettostatearmory.com/palmetto-5-7-rock-complete-pistol.html

 

Haven't seen a 5.7 pistol that I liked yet. It's cool as Heck in a Ps90 though. Ran a Ps90 in a PCC match once, it was easy to see why it's banned from said competition.

Ss190 was available. Still is, if you have the pockets and carpet. Any munchkin could reload nasty rounds if they wanted to. Just a bunch of nimby hoopla. 5.56 out of a carbine is away more powerful, obviously.

 

Double Necro thread revival for a cartridge that is on life support. Hmmm.

 

I admit I had a wee bit of interest in the 5.7x28. But ultimately not enough to ever pursue either a FiveSeven or Ruger 57, or anything else.

I doubt it's going to appear in a Glock unless it's an aftermarket clone, and I likely still wouldn't bother with it even if it did.