Glock Experts: Question on Upgrades
- Thread starter Piggy
- Start date
Piggy, I recently returned from a glock armorers school and I believe the extractor in your glock (if your careful you can look yourself - read please unload ha ha) has a flat face where it initially impacts the rear of the shell casing and "hops" over the case lip. Under extereme abuse the extractor can crack or chip off leaving your glock unreliable in the exraction of the shell casing. The new extractor has a 5 degree cant to the extractor face to eliminate the problem. Write to glock or find a glock armorer and they should be able to swop this part out easily.
John Hollister
New member
Glock has changed their extractors over the years. Hope this helps
Glock originally shipped their pistols with what was called a "90 degree" breech face and later changed all models to a "15 degree" breech face. To determine which you have is simple. Hold your slide out in front of you. Muzzle away from you and the rear of the slide towards your chest. Look straight down at the top of the slide, particularly were the breech face meets the barrel hood. On the right side of the barrel hood, if the extension has no angle it's a straight 90 degree. If it angles slightly to the rear, it's a 15 degree. See attached picture.
The change was made after it was discovered that the G21 was experiencing ejection problems with the 90 degree cut. Starting in 5/93 Glock recalled all G21 pistols so that they could be cut to a 15 degree angle. The G21 is the only model where this is critical, all other models were changed later for conformity.
The change to the 15 degree extractor was made as follows:
Model - Starting Prefix - Date
G17 - BKK - 5/95
G17L - BMD - 7/95
G19 - BKP - 5/95
G20 - BKU - 6/95
G21 - ALD - 5/93
G22 - BKD - 5/95
G23 - BKH - 5/95
G24/G24C - BMD - 6/95
G26 - BMX - 7/95
G27 - BMY - 7/95
Later models all had the change from the beginning of their production.
There was also a change in the hook angle of the extractor for some models. 9mm models have a parallel hook and .40, .357, 10mm and .45 models have a 5 degree hook. Some early .40 models were shipped with parallel hooks. The following should show you the difference. You'll probably find it's hard to tell the difference.
In '92 there was a general upgrade done to all existing pistols. The upgrade addressed several problem areas in the original design, including strengthening the firing pin safety. The upgrade effected pistols with prefixs up to and including:
G17 - XG
G19 - XK
G20 - WX
G21 - XM
G22 - YB
G23 - SL
All pistols with a three digit prefix have upgraded parts.
Attached you will also find a picture of three extractors. All are 9mm extractors of different generations. The first is a pre-upgrade extractor (no debris channel), the second is a 90 degree and the third is a 15 degree.
Also, just for the record. Do not drop a round in the chamber and drop the slide, with any extractor. This is a sure way to chip and break your extractor. A chipped or broken extractor means your pistol will not extract the case out of the chamber, defeating it's purpose.
To load the pistol, insert a loaded magazine. Rack a round into the chamber. Remove the magazine, insert a fresh round in the magazine and reinsert the magazine into the pistol.
Hope this helps
John Hollister
Glock, S&W, Colt and Sig Armorer
Glock Moderator for http://www.gunspot.com
[This message has been edited by John Hollister (edited February 23, 2000).]
Glock originally shipped their pistols with what was called a "90 degree" breech face and later changed all models to a "15 degree" breech face. To determine which you have is simple. Hold your slide out in front of you. Muzzle away from you and the rear of the slide towards your chest. Look straight down at the top of the slide, particularly were the breech face meets the barrel hood. On the right side of the barrel hood, if the extension has no angle it's a straight 90 degree. If it angles slightly to the rear, it's a 15 degree. See attached picture.
The change was made after it was discovered that the G21 was experiencing ejection problems with the 90 degree cut. Starting in 5/93 Glock recalled all G21 pistols so that they could be cut to a 15 degree angle. The G21 is the only model where this is critical, all other models were changed later for conformity.
The change to the 15 degree extractor was made as follows:
Model - Starting Prefix - Date
G17 - BKK - 5/95
G17L - BMD - 7/95
G19 - BKP - 5/95
G20 - BKU - 6/95
G21 - ALD - 5/93
G22 - BKD - 5/95
G23 - BKH - 5/95
G24/G24C - BMD - 6/95
G26 - BMX - 7/95
G27 - BMY - 7/95
Later models all had the change from the beginning of their production.
There was also a change in the hook angle of the extractor for some models. 9mm models have a parallel hook and .40, .357, 10mm and .45 models have a 5 degree hook. Some early .40 models were shipped with parallel hooks. The following should show you the difference. You'll probably find it's hard to tell the difference.
In '92 there was a general upgrade done to all existing pistols. The upgrade addressed several problem areas in the original design, including strengthening the firing pin safety. The upgrade effected pistols with prefixs up to and including:
G17 - XG
G19 - XK
G20 - WX
G21 - XM
G22 - YB
G23 - SL
All pistols with a three digit prefix have upgraded parts.
Attached you will also find a picture of three extractors. All are 9mm extractors of different generations. The first is a pre-upgrade extractor (no debris channel), the second is a 90 degree and the third is a 15 degree.
Also, just for the record. Do not drop a round in the chamber and drop the slide, with any extractor. This is a sure way to chip and break your extractor. A chipped or broken extractor means your pistol will not extract the case out of the chamber, defeating it's purpose.
To load the pistol, insert a loaded magazine. Rack a round into the chamber. Remove the magazine, insert a fresh round in the magazine and reinsert the magazine into the pistol.
Hope this helps
John Hollister
Glock, S&W, Colt and Sig Armorer
Glock Moderator for http://www.gunspot.com
[This message has been edited by John Hollister (edited February 23, 2000).]