GlockTalk.com
Home Forums Classifieds Blogs Today's Posts Search Social Groups



  
SIGN-UP
Notices

Glock Talk
Welcome To The Glock Talk Forums.

 
  
Reply
 
Thread Tools Display Modes
Old 09-18-2010, 19:30   #1
k9dpd
Member
 
Join Date: Jun 2004
Location: Duluth, Ga
Posts: 85
Gen 4 sights

I installed the sights I had on my gen 3 glock, a warren rear and a novak FO front. They shot POA/POI on the gen 3 but on the gen 4 they shot 3 inchs high, anyone know why this would be.
k9dpd is offline   Reply With Quote
Old 09-18-2010, 19:42   #2
bentbiker
NRA Member
 
bentbiker's Avatar
 
Join Date: Sep 2009
Location: Orange County, CA
Posts: 4,552
Are the guns the same model?
bentbiker is offline   Reply With Quote
Old 09-18-2010, 19:45   #3
k9dpd
Member
 
Join Date: Jun 2004
Location: Duluth, Ga
Posts: 85
yes both a G17
k9dpd is offline   Reply With Quote
Old 09-18-2010, 19:50   #4
bentbiker
NRA Member
 
bentbiker's Avatar
 
Join Date: Sep 2009
Location: Orange County, CA
Posts: 4,552
Same ammo?
bentbiker is offline   Reply With Quote
Old 09-18-2010, 19:58   #5
k9dpd
Member
 
Join Date: Jun 2004
Location: Duluth, Ga
Posts: 85
same ammo same sight picture,
k9dpd is offline   Reply With Quote
Old 09-18-2010, 20:11   #6
JBP55
Senior Member
 
Join Date: Mar 2007
Location: Louisiana
Posts: 8,158
Quote:
Originally Posted by k9dpd View Post
I installed the sights I had on my gen 3 glock, a warren rear and a novak FO front. They shot POA/POI on the gen 3 but on the gen 4 they shot 3 inchs high, anyone know why this would be.
Measure the height of the sights and let us know what they are.
JBP55 is offline   Reply With Quote
Old 09-18-2010, 20:22   #7
bentbiker
NRA Member
 
bentbiker's Avatar
 
Join Date: Sep 2009
Location: Orange County, CA
Posts: 4,552
Quote:
Originally Posted by k9dpd View Post
yes both a G17
Quote:
Originally Posted by k9dpd View Post
same ammo same sight picture,
Aside from the 1:1,000,000 chance of a bad barrel or slide, I can only see it being the shooter. Don't suspect you have access to a Ransom Rest or you probably wouldn't be asking the question. Do the triggers feel the same? I guess the grip and/or recoil spring on the Gen4 might change your ability to control the gun the same way -- better or worse. Have you fired from a supported position?

Last edited by bentbiker; 09-18-2010 at 20:25..
bentbiker is offline   Reply With Quote
Old 09-18-2010, 20:30   #8
k9dpd
Member
 
Join Date: Jun 2004
Location: Duluth, Ga
Posts: 85
triggers are the same, I have had other people shoot it and it is 3 inchs high for everyone, I think my calipers are saying its .185 on the front sight
k9dpd is offline   Reply With Quote
Old 09-18-2010, 20:47   #9
bentbiker
NRA Member
 
bentbiker's Avatar
 
Join Date: Sep 2009
Location: Orange County, CA
Posts: 4,552
Longshot, but have you looked to make sure the barrel is coming up perfectly flush with the slide (completely into battery)?
bentbiker is offline   Reply With Quote
Old 09-18-2010, 20:52   #10
Noponer
Senior Member
 
Noponer's Avatar
 
Join Date: Apr 2006
Location: North Georgia
Posts: 1,531
Quote:
Originally Posted by k9dpd View Post
I installed the sights I had on my gen 3 glock, a warren rear and a novak FO front. They shot POA/POI on the gen 3 but on the gen 4 they shot 3 inchs high, anyone know why this would be.
3 inches high at what range... 10 yards? 50 yards?

I have a new Gen4 G-19. I moved some Ameriglo sights from a Gen3 G-17RTF2 to the 19 & it hits the same as the 17 did... up to 25 yards.

Last edited by Noponer; 09-18-2010 at 20:54..
Noponer is offline   Reply With Quote
Old 09-18-2010, 20:54   #11
k9dpd
Member
 
Join Date: Jun 2004
Location: Duluth, Ga
Posts: 85
from 7 yards to 25 yards it hits high, not as much at 25 yards as 7,
k9dpd is offline   Reply With Quote
Old 09-18-2010, 21:06   #12
bentbiker
NRA Member
 
bentbiker's Avatar
 
Join Date: Sep 2009
Location: Orange County, CA
Posts: 4,552
Quote:
Originally Posted by k9dpd View Post
from 7 yards to 25 yards it hits high, not as much at 25 yards as 7,
That makes absolutely no sense. Line of sight is above the bullet at muzzle. Trajectory climbs to coincide at some point. The trajectory should continue to take the bullet higher and higher relative to line of sight (POA) well past 25 yds.
bentbiker is offline   Reply With Quote
Old 09-18-2010, 21:22   #13
JBP55
Senior Member
 
Join Date: Mar 2007
Location: Louisiana
Posts: 8,158
Quote:
Originally Posted by k9dpd View Post
triggers are the same, I have had other people shoot it and it is 3 inchs high for everyone, I think my calipers are saying its .185 on the front sight
Need the elevation of both sights.
JBP55 is offline   Reply With Quote
Old 09-18-2010, 21:23   #14
k9dpd
Member
 
Join Date: Jun 2004
Location: Duluth, Ga
Posts: 85
rear sight is a warren tactical rear sight, dont know what to measure on it
k9dpd is offline   Reply With Quote
Old 09-18-2010, 23:56   #15
mongo356
Senior Member
 
mongo356's Avatar
 
Join Date: Aug 2004
Location: IL
Posts: 852
Sometimes it works that way. I have two Gen3 G23's- 1 takes a taller rear sight to make the same POI. After assuming they would be the same once and having to buy extra rear sights to "fix" the POI, I now use the plastic stock sights of different heights and measure them w/ calipers and then order Ameriglo sights accordingly. Ameriglo gives the measurements instead of the generic one model number or set for all 9,40,45's and another for 10,357.

Here are some targets of mine showing the two different G23's. Note that the MSL G23 now has a taller rear 7.3mm.

Last edited by mongo356; 11-07-2010 at 12:57..
mongo356 is offline   Reply With Quote
Old 09-19-2010, 08:14   #16
samuse
Senior Member
 
samuse's Avatar
 
Join Date: Jul 2008
Location: South TX
Posts: 5,189
Blog Entries: 2
I think your front sight is too short. Warren sights usually use a .215" front. You can get a good f.o. from Dawson Precision.
__________________
"If you're not shootin', you should be loadin'. If you're not loadin', you should be movin', if you're not movin', someone's gonna cut your head off and put it on a stick." -Clint Smith


Quote:
You suck at...well, everything so far.
samuse is offline   Reply With Quote
Old 09-19-2010, 10:15   #17
bentbiker
NRA Member
 
bentbiker's Avatar
 
Join Date: Sep 2009
Location: Orange County, CA
Posts: 4,552
Quote:
Originally Posted by k9dpd View Post
They shot POA/POI on the gen 3 but on the gen 4 they shot 3 inchs high, anyone know why this would be.
Quote:
Originally Posted by JBP55 View Post
Need the elevation of both sights.
Quote:
Originally Posted by samuse View Post
I think your front sight is too short. Warren sights usually use a .215" front.
Guys, how would anything about the sights explain why one G17 shot to POA and another G17 with the same sights did not?

Last edited by bentbiker; 09-19-2010 at 10:17..
bentbiker is offline   Reply With Quote
Old 09-19-2010, 10:20   #18
3rdgen40
.45 fanatic
 
3rdgen40's Avatar
 
Join Date: May 2008
Location: Arkansas
Posts: 8,208
What size grip are you using on the GEN 4 ? If you are going bareback (SF) or large, that could be you're problem. Different size grip/handhold...know what I mean ?
__________________
BIG BORE FAN
3rdgen40 is offline   Reply With Quote
Old 10-16-2010, 18:41   #19
Ogie
Senior Member
 
Join Date: Jul 2010
Location: Northwest Indiana
Posts: 179
I am a little confused. Isn't POA and POI different at different distances?

On a G19 Gen 4 aren't the factory sights set up so that POA=POI at 25 yards?
Ogie is offline   Reply With Quote
Old 10-16-2010, 21:58   #20
bentbiker
NRA Member
 
bentbiker's Avatar
 
Join Date: Sep 2009
Location: Orange County, CA
Posts: 4,552
Quote:
Originally Posted by Ogie View Post
I am a little confused. Isn't POA and POI different at different distances?

On a G19 Gen 4 aren't the factory sights set up so that POA=POI at 25 yards?
You are correct -- the position of POA relative to POI is different at different distances, and designed to be equal at 25 yds. This is for all Glocks, not just the Gen4 G19.

Last edited by bentbiker; 10-16-2010 at 21:59..
bentbiker is offline   Reply With Quote

 
  
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump




All times are GMT -6. The time now is 09:50.




Homepage
FAQ
Forums
Calendar
Advertise
Gallery
GT Wiki
GT Blogs
Social Groups
Classifieds


Users Currently Online: 1,114
268 Members
846 Guests

Most users ever online: 2,244
Nov 11, 2013 at 16:42