Glock 21 in 45acp Theme Build

[Steelart99]

Glock Factory Trigger Mechanism Housing Ejector 9mm Luger Gen 5 Glock

This replacement part is a factory original from Glock. Factory replacement parts are manufactured to the exact same specifications and tolerances and...

www.midwayusa.com

Glock Factory Trigger Trigger Bar Glock 20, 21 Gen 5 Smooth Trigger

This Glock Factory Trigger with Trigger Bar is a factory original from Glock for the Glock 20 and 21. Factory replacement parts are manufactured to the...

www.midwayusa.com

Just swap your ejector from the other 20/21 housing you ordered. Use the one that comes with this one on another gun as an upgraded ejector.

Trigger housing $8: Trigger Mechanism Housing with Ejector for Gen5 & 19X

 

[bkbrno]

Again, you can take your Gen 3 trigger bar and covert it to a Gen 5 by cutting off the spring hook. It works perfectly. I've done it to dozens. Also, when you insert the trigger into the new spring guide on the Gen 5, put some gun grease on the trigger and in the channel as it can wear out from friction if you don't.

I would want a Gen5 to compare it to. Angles, dimensions, silly things like that bother me. If I had no other option I would do it but the part is available with a tiny bit of searching. I can be lazy that way.

The Gen 5 is has a tiny bit feel than the Gen3-4SF but the main advantage to me is that the sear seems to float up into full engagement. In my survey sample of about 3 conversions, I have not had to tweak the sear engagement when I had to on same frame with a Gen3. As always, verify.

 

[FrankenGlock]

Trigger housing $8: Trigger Mechanism Housing with Ejector for Gen5 & 19X

Never used them. It gives a price but you have to email for the price. Are they out of stock or something? Again, not familiar with the Glockmeister site.

 

[FrankenGlock]

I would want a Gen5 to compare it to. Angles, dimensions, silly things like that bother me. If I had no other option I would do it but the part is available with a tiny bit of searching. I can be lazy that way.

The Gen 5 is has a tiny bit feel than the Gen3-4SF but the main advantage to me is that the sear seems to float up into full engagement. In my survey sample of about 3 conversions, I have not had to tweak the sear engagement when I had to on same frame with a Gen3. As always, verify.

To me, the difference is huge in terms of feel. Yes, the Gen 5 always has the cruciform in the right place to catch the sear and it does it super fast with less resistance.

 

[USApat]

Maybe I'm stumped but I've read all the posts and it is not clear to me if you folks are talking about the frame being a P80 PF45 G21 build, or this is for an OEM Glock 21 frame that the OP is building???????

 

[FrankenGlock]

Maybe I'm stumped but I've read all the posts and it is not clear to me if you folks are talking about the frame being a P80 PF45 G21 build, or this is for an OEM Glock 21 frame that the OP is building???????

OP said Gen 3 Glock frame.

 

[bkbrno]

The PF45 instructions say to use a G20/21 SF trigger housing. I demonstrated to myself that a a Gen3 trigger housing does not work. No need for anyone else to repeat the experiment.

It is convenient that the SF trigger housing happens to be the same shape as a Gen5 trigger housing. Except, with the Gen5 part you need a Gen5 back plate on the slide or modify your Gen3 back plate which is a 5 minute deal with a X-acto knife.

I put a + connector in my Gen5 so I negated a bit of the feel gains. All you pansies are trying to lighten the pull. I prefer a more manly pull weight. I might have to rethink that because hands starting to feel the old age.

 

[FrankenGlock]

Not the pull weight but the feel and function. Pre Gen 5 and pre GPT feels gritty to me. The Gen 5's are much smoother. I typically run a + connector with the Vex trigger on the large frame models so pull effort is not the issue though a light trigger on the regular frame models with the GPT and Vex is amazing.

 

[Steelart99]

Never used them. It gives a price but you have to email for the price. Are they out of stock or something? Again, not familiar with the Glockmeister site.

When you select "Email for price", there is an option to just put it into your cart. Give an $8 price which is exactly what I got back in an email.

 

[FrankenGlock]

Darn good deal if shipping is included.

 

[MikedaddyH]

That brake/comp statement is generalized. I have put several different one's
on a G32 and can't settle or find one that I like yet. On a G34 I just lucked up , it's works perfectly follow up shots are instant. No movement of the sights, I had to play with the recoil spring until it was tuned in, ended up using a 12 lb spring. Downside is it looks funny , functions flawlessly so it's staying. The Compensator that's going on this build needs to be square and butt against the end of the slide. Texas Gun Works has a nice one or if I can splurge a KKM comp.
As far as the Trigger, I have all the parts ordered. Going to finish what I started, my tried and true combo that I know works. Johnny Glocks style work up that I have done 20 plus times, it's a mid 3lb pull and it it crisp. The next build a G40 is going to have the FrankenGlock trigger on a gen 5 trigger housing. That frame is already assembled and I can take out the trigger assembly and set it aside . The FrankenGlock trigger now will be assembled and worked on until I can figure out the new system while I save up money for the new slide and barrel.

 

[Bongo Lewi]

That brake/comp statement is generalized. I have put several different one's
on a G32 and can't settle or find one that I like yet. On a G34 I just lucked up , it's works perfectly follow up shots are instant. No movement of the sights, I had to play with the recoil spring until it was tuned in, ended up using a 12 lb spring. Downside is it looks funny , functions flawlessly so it's staying. The Compensator that's going on this build needs to be square and butt against the end of the slide. Texas Gun Works has a nice one or if I can splurge a KKM comp.
As far as the Trigger, I have all the parts ordered. Going to finish what I started, my tried and true combo that I know works. Johnny Glocks style work up that I have done 20 plus times, it's a mid 3lb pull and it it crisp. The next build a G40 is going to have the FrankenGlock trigger on a gen 5 trigger housing. That frame is already assembled and I can take out the trigger assembly and set it aside . The FrankenGlock trigger now will be assembled and worked on until I can figure out the new system while I save up money for the new slide and barrel.

I'm too lazy.

Brake vs comp... they have roughly the same effect but a brake tends to piss off the guy in the lane next to you a range. Comps are starting to become standard factory options and race gunners are embracing them in greater numbers. Springfield seems to be leading on this in the factory gun realm with the Hellcat and the Prodigy. Some others as well. My experience is it's not like night and day but a properly designed comp does noticeably reduce muzzle flip. Of course that's dependent on the shooters skill, form, etc. I've repeated here many times buying shit doesn't make anyone a better marksman.

Triggers... APEX has worked fine for me as has Johnny on Glocks and clones. I've been a Timney fan for years on rifles but their Glock triggers failed to impress me.

 

[MikedaddyH]

I'm too lazy.

Brake vs comp... they have roughly the same effect but a brake tends to piss off the guy in the lane next to you a range. Comps are starting to become standard factory options and race gunners are embracing them in greater numbers. Springfield seems to be leading on this in the factory gun realm with the Hellcat and the Prodigy. Some others as well. My experience is it's not like night and day but a properly designed comp does noticeably reduce muzzle flip. Of course that's dependent on the shooters skill, form, etc. I've repeated here many times buying shit doesn't make anyone a better marksman.

Triggers... APEX has worked fine for me as has Johnny on Glocks and clones. I've been a Timney fan for years on rifles but their Glock triggers failed to impress me.

OC triggers are pretty good for the price point. A guy at my old job talked them up so much I eventually tried one in a G19 , no complaints. They also have a very good selection of parts for sale.
Shot a Prodigy...Nice !
I bought a Springfield XDM 10 it's a Hammer !!!

 

[MikedaddyH]

The PF45 instructions say to use a G20/21 SF trigger housing. I demonstrated to myself that a a Gen3 trigger housing does not work. No need for anyone else to repeat the experiment.

It is convenient that the SF trigger housing happens to be the same shape as a Gen5 trigger housing. Except, with the Gen5 part you need a Gen5 back plate on the slide or modify your Gen3 back plate which is a 5 minute deal with a X-acto knife.

I put a + connector in my Gen5 so I negated a bit of the feel gains. All you pansies are trying to lighten the pull. I prefer a more manly pull weight. I might have to rethink that because hands starting to feel the old age.

So as it appears, I need to get a SF for a G41 build to do the FrankenGlock trigger.
This group is doing the same stuff as the 308 forum. Building a gun around a trigger . At least it's not a firing pin !!!!

 

[bkbrno]

For the PF45 and PF45 only.

The instructions specify a Gen3 G20 SF trigger housing. Period, dot. The slot in the rear of the frame is moulded for the SF housing. Not really building up around a trigger. More of getting the correct parts from the start because the G20/21 has two available parts depending on whether G21 or G21SF. I bought the wrong trigger housing once and it stopped my build for two weeks while I waited on parts.

Now, hang on here, the G21 SF trigger housing has the same exterior dimensions as a Gen5 housing but the internal parts are Gen3. It has a pointy end instead of squared off like the Gen3.

The Gen5 trigger housing is the the same external shape as the Gen3 SF housing but the internal mechanism is all different. The Gen5 trigger bar is different as well as the trigger shoe. The shoe is different because it is set up for the ambi slide release. I have not had a problem with the extra space left for the ambi release but it doesn't mean you won't. I did not change the shoe but some people have.

Keep it simple. Buy a Glock OEM Gen3 SF trigger housing and a Gen3 trigger. I don't know of an aftermarket alternative. Lone Wolf had a universal trigger housing specific to the PF45 at one time but I don't think they are available currently. Haven't looked in the last year.

Or, as a slight upgrade, buy a Gen5 Trigger Housing, Gen5 trigger, and Gen5 slide back plate. 3 parts.

If you have done dozens of these, I suppose you could cut and modify a Gen3 trigger bar. I have not done that before so no comment. With no parts to compare and match, I would not go this route for the first try. You will have to buy both Gens if you want to have a template to work from.

One last note. The trigger housing on the PF45 needs to be modified to drop all the way down to the frame. I suggest the available MGB video to describe this modification. While it is almost always a good idea to modify the cheapest part, I couldn't live with the error in the PF45 frame casting that requires this modification. I posted a fix on here. It takes about 10 seconds with a dremel sanding drum and allows you to drop in a trigger housing without modification. I don't know what happens when you grind off the back section of a Gen5 housing per MGB's video, it is uncharted territory for me. Because I modified my frame, the Gen5 part dropped right in on my PF45. I keep specifying PF45 because it is the only P80 frame that you have to do this to.

Sorry I don't have part numbers for you, I can't find my notes. It's pretty clear if you order from Midwayusa.

 

[Bongo Lewi]

OC triggers are pretty good for the price point. A guy at my old job talked them up so much I eventually tried one in a G19 , no complaints. They also have a very good selection of parts for sale.
Shot a Prodigy...Nice !
I bought a Springfield XDM 10 it's a Hammer !!!

I also have the XD/M in 10mm. I think it's the best polymer striker in that caliber. I also have a G20 which is fine, but I like the SA better. The XD design is starting to look a little long in the tooth, but you can't beat its reliability. Both the Glock and The Springfield eat any 10mm ammo I feed them.

Take a look at the Echelon if you havent already. Springfield is on a roll.

 

[FrankenGlock]

I've never had to modify a PF45 frame for a trigger housing when using Glock components. Lone Wolf, yes but not Glock. I've built around 10 of the PF45's so maybe I'm just lucky.

 

[bkbrno]

I've never had to modify a PF45 frame for a trigger housing when using Glock components. Lone Wolf, yes but not Glock. I've built around 10 of the PF45's so maybe I'm just lucky.

You don't have to modify the frame but a trigger housing will not seat all the way down if you don't modify something. There is a ridge molded into the frame that keeps the trigger housing from going all the way into the slot. It is well known. Lone Wolf made a part to compensate for it, the Universal Trigger Housing. MGB made a video to describe the problem and his solution when using an OEM Glock housing. I thought I posted pictures but all I can find is my post here describing what I did. Product Review - PF45 Build Day With My Brother I'll keep looking.

With nothing done to correct this, the pin for the trigger housing will not go in easily or at all. The trigger housing will be slightly too high and cause the slide to bind. It will also put the striker higher than it should be and give you minimal sear engagement.

My frame and two others I saw had this issue. Enough people had this issue that MGB did a video on it. I'm not sure how you escaped it.

 

[FrankenGlock]

Not discounting what you are saying but I’ve never experienced that issue with any of my PF45 builds. Maybe I found another way to overcome the issue but don’t remember there being any.

 

[Bongo Lewi]

With nothing done to correct this, the pin for the trigger housing will not go in easily or at all. The trigger housing will be slightly too high and cause the slide to bind. It will also put the striker higher than it should be and give you minimal sear engagement.

I fell victim to this on my first P80. It took forever for me to figure out what the problem was.