Upgrading a Glock 21SF, Photo Expose

mountainspruce

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I upgraded a stock Glock 21SF with a few things I thought would improve upon the handling characteristics of the pistol. Maybe some of you will like to do some of these.

The first upgrade I did was a stainless steel guide rod and spring. These items were ordered as two separate parts. After I added this to my Glock, I noticed a "stiffer report" during recoil. I "think" it was worth it but it's hard to tell how much real difference it makes. Still, I prefer a stainless part over a plastic one and hence, I've kept it on the pistol. It has had over 500 rounds with no malfunctions using these parts.

Item: ISM-GL17 -- ISMI Full Size 17 lb Recoil Spring
Item: GR2021 -- S/S Guide Rod for G20,21,21SF

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I didn't do much to my pistol for a long time and then one day, I decided to add some grip tape. I bought the grip tape from a hardware store for about $2 and cut it out with a utility knife. What a grip. It felt like a completely different pistol. I'll never go back. I am against stippling as the hands sweat too much and the plastic remains slippery even after just 30 or 40 rounds.
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I place my thumb along the frame here and the grip tape offers a better index point hence the grip tape in this location. I need to add more tape to the front forward face of the trigger guard.
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I added more tape just under the tail here. You can also see that I cut the grip tape to match the original Glock grips here. It only took about 20 minutes to get it right.
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After the tape job, I thought, what the heck, I'll see what else I can do to improve the handling of my Glock so I decided that a extended slide release would be a good idea. I ordered part no. 100-002-748 GLOCK EXT SLIDE REL ALL MDLS EXC 17 from Brownells. It fit nicely. I am not sure I "needed" this part but I like the new ergonomics of this function.

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After I added the extended slide release, I wanted to see if I could improve upon the Glock trigger by lightening it with a 3.5lb trigger connector. My impression is that this new trigger connector offers a snappier feel, it's lighter and after 400 rounds at the range, it functions 100%. I have not gone back to my old trigger connector. I also did not measure the actual pull weight of the new trigger, but it is certainly faster than my old one and I think it has less take up and as mentioned, less travel. Here is a photo of the old trigger connector. I'll keep it just in case I need it one day. I used Glockwork9's youtube video to do that. Simple stuff.

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By far the most expensive thing I did was order up the Heine Ledge #3195 3D Tritium Night Sights. I had to order these via Brownells Special Order Dept. (SOD) in two separate orders. That meant paying shipping for each order separately in order to get them on a separate invoice each as an under $100 shipment so off the email went...Sarah in the SOD was very helpful.

Order 1:
Heine Ledge #3195 3D Tritium Night Sight FRONT
Order 2:
Heine Ledge #3195 3D Tritium Night Sight REAR

These sights are probably the best sights I have ever seen on a Glock. I installed them myself after watching Brandon401401's video on the subject. Easy stuff.
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Another handy thing every Glock owner needs is Item: GT03374 -- Glock Armorer's Tool. It's all you need to service the pistol and detail strip it.

BTW, I don't care about resale value and this one isn't a collectible so I was happy to experiment. I think I have about $1200 invested and without spending money on gunsmithing, there is probably $1400 of value here all told. I don't think I will change another thing on this Glock but I will keep my white Crayola crayon sharp. :p Right now, the 21SF runs 100% although I keep hearing about the Ambi. models having a "sticky" mag. release: mine hasn't developed that irksome issue. Good luck with your upgrades!
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I like the Ghost rocket connector myself, really shortens the overtravel in addition to lightening. The actual stainless guide rod won't make much difference, except if you torture test it for 1000 rounds, you won't melt the plastic one (it'll still run melted however), the best part of having a different guide rod, is the ability to use different weight springs, to run different loads, lighter or heavier.

You could hit up the Wolff gunsprings site for some more ideas. I'd got pretty much every recoil spring weight, the competition spring kit, and extra power magazine springs which I still need to test, but shouldn't be any problem.
 
I'm not really a fan of the stainless guide rods (mainly because the RSA is not a failure point on glocks in my experience and I don't swap stuff out unless it becomes an issue) but other than that I like these mods. Well, I don't care either way about crayons, but it's obviously not going to hurt the pistol so I don't see the harm.

I have been meaning to try a 3.5 connector with a NY1...the usual, you know the drill. But I haven't gotten around to it yet.

I do like the sights and the grip tape a lot.

My favourite glock mod is to take a dremel to the trigger guard and fix the ####ing thing so it doesn't punch my knuckle every time I grab it. Why glock can't figure that out at the factory is totally beyond me, but that's made the most difference out of anything I've ever done to a glock, short of throwing away the garbage factory sights.
 
I could be wrong, but the extended mag. release for the Ambi. G21SF is not available.

About the only other modification I am considering right now is polishing the barrel feed ramp.
 
call that G21SF upgrading?

THIS is G21SF upgrading ;)
stippling only in key area for my grip. grip tape only on the area of the backstrap that's plain. Flash hider only for s**ts and giggles, I never shoot with that (altough it does work). I have the same internals as yours, except the strenght of the spring when I shoot 10mm (use factory spring for 45acp)




My G21SF's three pieces suit, 10mm, 22lr, 45acp



But I do have a question for you... how is your spring "encased" onto the rod? The screw they supplied with my guide rod does nothing to hold the spring and it is a PITA to put back togheter (especially since its a 20 pounds one...
 
I couldn't live with that. It's driving me bat-sh!t crazy right now.

* but congrats on a good job customizing & upgrading it..!

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call that G21SF upgrading?

THIS is G21SF upgrading ;)
stippling only in key area for my grip. grip tape only on the area of the backstrap that's plain. Flash hider only for s**ts and giggles, I never shoot with that (altough it does work). I have the same internals as yours, except the strenght of the spring when I shoot 10mm (use factory spring for 45acp)





 
But I do have a question for you... how is your spring "encased" onto the rod? The screw they supplied with my guide rod does nothing to hold the spring and it is a PITA to put back togheter (especially since its a 20 pounds one...

It is a screw. I added blue loctite to it and screwed it down. I like the suit by the way but again, grip stipling is still too slippery after my hands start to sweat...grip is not as pretty and will wear out, but it works better.
 
Slide-to-frame fit has little to do with mechanical accuracy. If the barrel, sights, and slide are aligned the same way every shot, what does it matter whether those parts line up with the frame the same way every time? Slide-to-frame fit is grossly over-hyped as a perceived quality measurement because it is easy to detect.
 
It is a screw. I added blue loctite to it and screwed it down. I like the suit by the way but again, grip stipling is still too slippery after my hands start to sweat...grip is not as pretty and will wear out, but it works better.

that's my problem... the supplied screw doesn't hold the spring onto the rod... it just fills the threaded hole (i.e. useless)
 
that's my problem... the supplied screw doesn't hold the spring onto the rod... it just fills the threaded hole (i.e. useless)

Sounds like an easy fix but one that may require an email to a "Glockmeister" type store in the hope they will reply or see if you can obtain the proper threaded screw from Fastenall, cut it down and even grind the top. :confused: I would attempt this only if there is no other off-the-shelf solution. Start with a pan-head screw? Just a few thoughts... . Of course, a new guide rod is only $20 as far as I know...the ISMI spring I purchased was about the same.
 
call that G21SF upgrading?

THIS is G21SF upgrading ;)
stippling only in key area for my grip. grip tape only on the area of the backstrap that's plain. Flash hider only for s**ts and giggles, I never shoot with that (altough it does work). I have the same internals as yours, except the strenght of the spring when I shoot 10mm (use factory spring for 45acp)




My G21SF's three pieces suit, 10mm, 22lr, 45acp



But I do have a question for you... how is your spring "encased" onto the rod? The screw they supplied with my guide rod does nothing to hold the spring and it is a PITA to put back togheter (especially since its a 20 pounds one...

2 Questions:

You have a Glock 21sf with the 1913 Picatinny Rail (ambi release), and you have converted it to 10mm. Do the 10mm rounds go into the .45 G21sf mags? Did you have to do any other modifications other then replacing the barrel and the recoil spring?

Second question I have never seen those sights before who makes them and where can you get them?
 
I use the g20 mags, they fit, but make sure to order the mags with the ambi mag release cut. I did once receive a g20 mag without it and it isn't much of a big deal to remove the plastic, but I'd rather have it factory. At one point I tried a 10mm extractor, but noticed no improvement so went back to the 45 one so switching caliber is easy and fast (switch barrel, put back factory spring).

sights are ATS (advantage tactical sights) you can order direct from them, and if you have any questions, the president of the co. answers himself :p Very customer oriented business. They come with 5 coloured inserts for each sight so you have a possibility of 25 combos. I really like the design, it's too bad I don't have any other gun that those sights are available for
 
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