DHart
01-08-11, 19:50
Hoping this thread may be useful to other potential buyers of Glock 22 Gen4s.
I'm thinking about getting a G22 Gen4 to shoot as a .40 and as a 9 (with a 9mm conversion barrel, G17 mags and possibly different recoil spring assembly).
Here's what I've learned so far from some research done here and elsewhere on the Gen4:
Early Gen4 versions (aka Variant 1) had no counterbore in the slide at the front position of the recoil spring assembly (RSA) and the open spring end sometimes got stuck in the front of the slide.
I believe that Glock issued a new spring design to work in these pre-counterbore models so that the spring would no longer get caught.... Is that correct? Pre-counterbore versions are identified by pre-PUN s/n prefix.
Moreover, to address the issue in the most recent production models (aka Variant 2), Glock began to cut a counterbore in the inside front of the slide where the RSA sits and changed the front of the RSA to fit it. These RSAs now sit securely in the counterbore and don't get stuck. Counterbore models are identified by PUN- and later s/n prefix.
Each of these production versions take different springs, designed for how the front of the spring interfaces the front of the slide.
It looks like the counterbore version is likely to be the version that Glock will be using going forward.
SO.... cutting to the chase... would there be any particular benefit to go with the counterbore version, particularly for the person who would want to use a G22 Gen4 for both .40 and 9mm, or is either version likely to be equally desireable?
Given that Glock is still making changes to the RSA's on the Gen4 guns (particularly for the G17), it would seem that choosing a counterbore version might ensure better forward compatibility with various RSAs and aftermarket (e.g. Glockmeister) RSAs... but I wanted to put this out to the forum members to hear your thoughts on the question...
======================================
The following information was released, by Glock, I believe. I have copied it from another thread and reformatted it for easier reference.)
GLOCK RECOIL SPRING ASSEMBLY (RSA) PART NUMBERS FOR GEN4 PISTOLS
11-20-10 - Glock now offers 6 different Gen4 RSAs for our Gen4 pistols
1st Model Gen4 G17 serial # prefixes prior to but not including “PUN”
NOT-COUNTERBORED
(still current & in production now, on into 2011)
· SP 08692 – RSA for “Variant 1” Gen4 17 with flat-back slide-nose-ring.
· Use in Gen4 G17 pistols serial # prefixes “PFB, PMN, PMP, PMR, PMS, PPM, PPP, PPR, PPS”, etc.
· For all Gen4 G17 serial # prefixes prior to but not including “PUN”.
· SP 08692 is marked on the rear flange: “0 2 1”
2nd Model Gen4 G17 serial # prefix “PUN” & later, & all Gen4 G34 pistols
COUNTERBORED
· SP 08284 – RSA for “Variant 2” Gen4 G17 & G34 that have a “chamfer” or “counterbore” around the
nose-ring-hole inside the slide (like a G26 or G27).
· Use in Gen4 G17 pistols with serial # prefix “PUN” & later, & all Gen4 G34 pistols.
· NOTE: One small batch of serial # prefix “PUN” Gen4 G17 pistols was run for the commercial market (not
LE), to test the new SP 08284 RSA for Gen4 G17 & Gen4 G34 pistols.
· “Variant 2” Gen4 G17 pistols are not currently in production as of 1120-18-10.
· Do NOT use the SP 08284 in Gen4 G17 pistols with serial #s prior to “PUN”.
· SP 08284 is marked on the rear flange: “0 2”
1st model Gen4 G22 & Gen4 G37 serial # prefixes prior to but not including “PUN”
NOT-COUNTERBORED
· SP 08694 – RSA for “Variant 1” Gen4 22 & Gen4 G37 with flat-back slide-nose-ring.
· Use in Gen4 G22 & Gen4 G37 with serial # prefix “PCG” & other serial # prefixes prior to “PUN”.
· SP 08694 is marked on the rear flange: “0 1 1”
2nd model Gen4 G22 & Gen4 G37, & all Gen4 G31 & Gen4 G35 models # prefix “PUN” & later, & all Gen4 G31 & G35 pistols
COUNTERBORED
· SP 07577 – RSA for “Variant 2” Gen4 G22 & Gen4 G37 pistols that have a “chamfer” or “counterbore”
around the nose-ring-hole inside the slide (like a G26 or G27), & all Gen4 G31
& Gen4 G35.
· Use in Gen4 G22 & Gen4 G37 with serial # prefix PUN & later, & all Gen4 G31 & Gen4 G35 models.
· Do NOT use the SP 07577 in Gen4 G22 & Gen4 G37 pistols with serial #s prior to “PUN”.
· SP 07577 is marked on the rear flange: - “0 1”
ALL Gen4 G19
· SP 08703 – RSA for all Gen4 G19 pistols.
· Standard on all G19s beginning with serial # prefix “RCY” on 11-03-10.
· Available as Spare Parts about 11-20-10.
· SP 08703 is marked on the rear flange: “0 4”
I'm thinking about getting a G22 Gen4 to shoot as a .40 and as a 9 (with a 9mm conversion barrel, G17 mags and possibly different recoil spring assembly).
Here's what I've learned so far from some research done here and elsewhere on the Gen4:
Early Gen4 versions (aka Variant 1) had no counterbore in the slide at the front position of the recoil spring assembly (RSA) and the open spring end sometimes got stuck in the front of the slide.
I believe that Glock issued a new spring design to work in these pre-counterbore models so that the spring would no longer get caught.... Is that correct? Pre-counterbore versions are identified by pre-PUN s/n prefix.
Moreover, to address the issue in the most recent production models (aka Variant 2), Glock began to cut a counterbore in the inside front of the slide where the RSA sits and changed the front of the RSA to fit it. These RSAs now sit securely in the counterbore and don't get stuck. Counterbore models are identified by PUN- and later s/n prefix.
Each of these production versions take different springs, designed for how the front of the spring interfaces the front of the slide.
It looks like the counterbore version is likely to be the version that Glock will be using going forward.
SO.... cutting to the chase... would there be any particular benefit to go with the counterbore version, particularly for the person who would want to use a G22 Gen4 for both .40 and 9mm, or is either version likely to be equally desireable?
Given that Glock is still making changes to the RSA's on the Gen4 guns (particularly for the G17), it would seem that choosing a counterbore version might ensure better forward compatibility with various RSAs and aftermarket (e.g. Glockmeister) RSAs... but I wanted to put this out to the forum members to hear your thoughts on the question...
======================================
The following information was released, by Glock, I believe. I have copied it from another thread and reformatted it for easier reference.)
GLOCK RECOIL SPRING ASSEMBLY (RSA) PART NUMBERS FOR GEN4 PISTOLS
11-20-10 - Glock now offers 6 different Gen4 RSAs for our Gen4 pistols
1st Model Gen4 G17 serial # prefixes prior to but not including “PUN”
NOT-COUNTERBORED
(still current & in production now, on into 2011)
· SP 08692 – RSA for “Variant 1” Gen4 17 with flat-back slide-nose-ring.
· Use in Gen4 G17 pistols serial # prefixes “PFB, PMN, PMP, PMR, PMS, PPM, PPP, PPR, PPS”, etc.
· For all Gen4 G17 serial # prefixes prior to but not including “PUN”.
· SP 08692 is marked on the rear flange: “0 2 1”
2nd Model Gen4 G17 serial # prefix “PUN” & later, & all Gen4 G34 pistols
COUNTERBORED
· SP 08284 – RSA for “Variant 2” Gen4 G17 & G34 that have a “chamfer” or “counterbore” around the
nose-ring-hole inside the slide (like a G26 or G27).
· Use in Gen4 G17 pistols with serial # prefix “PUN” & later, & all Gen4 G34 pistols.
· NOTE: One small batch of serial # prefix “PUN” Gen4 G17 pistols was run for the commercial market (not
LE), to test the new SP 08284 RSA for Gen4 G17 & Gen4 G34 pistols.
· “Variant 2” Gen4 G17 pistols are not currently in production as of 1120-18-10.
· Do NOT use the SP 08284 in Gen4 G17 pistols with serial #s prior to “PUN”.
· SP 08284 is marked on the rear flange: “0 2”
1st model Gen4 G22 & Gen4 G37 serial # prefixes prior to but not including “PUN”
NOT-COUNTERBORED
· SP 08694 – RSA for “Variant 1” Gen4 22 & Gen4 G37 with flat-back slide-nose-ring.
· Use in Gen4 G22 & Gen4 G37 with serial # prefix “PCG” & other serial # prefixes prior to “PUN”.
· SP 08694 is marked on the rear flange: “0 1 1”
2nd model Gen4 G22 & Gen4 G37, & all Gen4 G31 & Gen4 G35 models # prefix “PUN” & later, & all Gen4 G31 & G35 pistols
COUNTERBORED
· SP 07577 – RSA for “Variant 2” Gen4 G22 & Gen4 G37 pistols that have a “chamfer” or “counterbore”
around the nose-ring-hole inside the slide (like a G26 or G27), & all Gen4 G31
& Gen4 G35.
· Use in Gen4 G22 & Gen4 G37 with serial # prefix PUN & later, & all Gen4 G31 & Gen4 G35 models.
· Do NOT use the SP 07577 in Gen4 G22 & Gen4 G37 pistols with serial #s prior to “PUN”.
· SP 07577 is marked on the rear flange: - “0 1”
ALL Gen4 G19
· SP 08703 – RSA for all Gen4 G19 pistols.
· Standard on all G19s beginning with serial # prefix “RCY” on 11-03-10.
· Available as Spare Parts about 11-20-10.
· SP 08703 is marked on the rear flange: “0 4”