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Old 10-08-2012, 18:41   #1
Join Date: Aug 2011
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Gen 3 21sf VS Gen 4 21

I'm suppose to buy a Gen 3 21sf tomorrow but now have been told I can get an even smaller grip size on a Gen 4 21 glock. Can I get some feedback by tomorrow 10/09/12 at 10 am EDT from peole who have held both? I would be extremely thankful for any guidance in this matter.
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Old 10-08-2012, 18:56   #2
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The SF G21 is has the same dimensions as the Gen 4 G21 with no backstrap. There are some differences between each, such as the grip texturing, the mag release size, and the dual recoil spring assembly.

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Old 10-08-2012, 18:57   #3
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I can't feel or measure any real difference in grip size between the SF and Gen4 grips.

That said, the reasons I would go for the Gen4 are: the mag catch is easier to reach/use, the recoil spring assembly is improved and appears to help handle recoil a bit better, and the grip surface works better for me....less 'slippery'. Another some people would go for the Gen4 is that the grip can be made bigger.

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Old 10-08-2012, 19:03   #4
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I have owned a gen2 G21, gen3 G21sf and gen4 G21. The gen4 is the best in my oppinion. The grip texture is better than the previous generations, the magazine release is larger and easier to opperate and the new RSA design seems to tame the recoil more then the previous generations. I do however like the slide finish better on the gen3.
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Old 10-08-2012, 19:06   #5
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I have both.

For some reason, the Gen 4 grip feels "smaller". I have giant hands, but really like that grip.

All my Glock pistols will be Gen 4's one day.
"it's hard to make a fed-proof holster that you can still get the gun out of" Bren
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Old 10-08-2012, 19:07   #6
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Gen4 21 ftw
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Old 10-08-2012, 19:19   #7
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I had the Gen 3 21SF and sold it because, unlike any other Glock I owned at the time, my shots were well off POA, even at 7-10 yards. The Gen 4 21 that I have had for several months now has been perfect and I like it for all the same reasons that others have said above.
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Old 10-08-2012, 20:09   #8
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Gen 3 sf 21 VS Gen 4 21

WOW...thank you guys. If I have a glock question this is the place to come. Tomorrow I purchase a Gen 4 21. Ill let you all know what I think of it once I've fired it a couple of hundred times.
Again, thank you all.
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Old 10-08-2012, 21:07   #9
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This may help you.
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Old 12-25-2014, 09:30   #10
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Is there any difference in the grip angle?
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Old 12-25-2014, 09:54   #11
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I have a Gen4 41 and a Glock 21SFRTF2. The RTF2 feels a little slimmer in my hand than the Gen4. I had a Gen3 21SF and the Gen4 21/41 frame feels smaller than that.
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Old 12-25-2014, 10:25   #12
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The SF and the Gen 4 with no backstrap are the same. The enhanced grip texture, larger and ability to go lefty with the mag release are both great reasons to get the gen 4 instead. After shooting the gen 4s, I would never even think of a gen 3.
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Old 02-27-2015, 17:33   #13
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Good information from all above. It looks like the majority of shooters are leaning to the Gen 4. Thanks is offline   Reply With Quote


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