Glock 27 and 33 question

H

HukeOKC

New member
This needs to be looked at as another "The only stupid question is the one not asked".

Why did Glock make the G27 and G33 if they are the same size and you can get a replacement/conversion barrel to convert one to either caliber?

Did they make these prior to the replacement/conversion barrell invention or what?



[This message has been edited by HukeOKC (edited May 25, 2000).]
 
The .40 cal G27 came first. The .357 SIG round was designed deliberately to use the same breechface, mags, etc. as a .40, so when the .357 SIG came out, all Glock had to do was re-barrel the .40s and hey, a new model!

I believe many other .40s can be swapped the same way, but some of the makers have not got round to producing the barrels.
 
AHA! So it's a conspiracy! I knew it!

Actually I figured the 27 was first but I just can't see the point of a new model if it is only a barrel change. Also I see on Glockmeister.com that the width of the 33 is smaller than the 27. The 33 also weighs less but is this do only to the barrel weight. If the width on the 33 is smaller will it take a .40 S&W barrel, or will it be too narrow for some reason? Stop me I'm asking too damn many questions!!!! :confused:
 
I haven't measured my G33's width against that of a G27 with a micrometer but they appear identical in every dimension except the inside diameter of the barrel and the dimension/shape of chamber. I feel confident in saying that the G33 and G27 are of identical exterior measurement given that you are comparing within the same production generation. There might be some slight dimensional differences between older generation G27's and the latest generation G33's.

As for the G33 being lighter due to barrel weight, I don't think so. The barrels appear to be the same except for the size of the bore and the chamber dimensions. The G33 barrel has more meat due to the smaller diameter bore hole size with the outside diameter being the same as the G27 barrel.

Basically, my point is this. They took the same size barrel blank and removed less total metal in the bore and chamber area. How on earth would this account for a lighter barrel? The G27 barrel with thinner bore walls and a larger chamber area machined out would no doubt be lighter than the G33 barrel.

The barrels interchange and fit either gun but the swap is only recommended on the latest generation frames, which was beefed up to handle the .357SIG cartridge. If the frame doesn't have the finger grooves and frame accessory rails it is from an older production generation and shouldn't be converted to fire the .357SIG.

Hope this helps. :)

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The Glock freak formerly known as Chris...
 
Yeah that helps alot because I was not aware of the upgrades to the frame for the .357 Sig. I was going to buy the G27 but now I think I'll just go with the G33. It will for sure be able to handle the .40 S&W.

Great point on the barrell weight. I was thinking of it bass-acwards. That also answers my barrel change question for the G33 taking the 40 barrel.

My only weight and diminsion figures came from Glockmeister from the gun pics which also has the specs on each gun listed under the pic. On the G27 page it lists the width as 1.25 in. and weight at 22 oz. or something like that. The G33 page shows it's width at 1.18 in. and weight at 19.75 oz. I was figuring that since everything should be the same, where does the weight difference come from.

Thanks for the help.
 
I bought a 27, then I bought an aftermarket 357 Sig barrel. Works great.. but.. Make sure you get the adjustable sight version of what ever you get if you swap barrels. I got the adjustable sights on my 27 and I had to adjust the sights when I went to 357 sig. 357 sig is a real handful in that little puppy, but so are some of the hot 180 grain 40 loads. I don't carry it in 357 sig because the recovery time between shots is too great. I carry it in 40 with 165 grain hydra-shok, the perfect load for that little savage. :)
 
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