20 and 21 big bore same size. The 17 and other 9mm, 40, 357 sig are smaller mid-size frames.

 

Look for one for the G21. Same dimensions

 

Runs about $120 with the TLR-1. I have the Michael and Zacchaeus. Very high quality.

https://dalefrickeholsters.com/index.php/product/gideon-elite-holster/#

 

Look at 2aholster.com. Tom can make about anything you need. He makes all of my custom pistol light holsters.

 

Bravo Concealment.

 

They have no G20 offerings in their lineup. Looks like good stuff though. I went ahead and emailed them to see if its something they can do.

 

G20, G21 can use same holster. If you get one that's open on the end, you can also use the same holster for G40 and G41.

The G29/G30 will also fit.

 

The 41 has a thinner slide like the 30S and 36.

I have a Dara holster for my 20 sporting a TLR1

 

Blade-Tech is one. For this brand, the Streamlight TLR-1 holster also works with the TLR-1HL. The adjustment screws allow for either light to be used:
http://shop.blade-tech.com/index.php?cPath=1_23_25&osCsid=gq94cm2v7h9t49adrf46ma8u07#.WU1L0sadnNA

Sidearmor. This company is apparently still in business as its website is still up. I haven't bought from them in years, but more recently, I had a question which Sidearmor never responded with an answer. This company hasn't had any new products since Glock Gen4 models were introduced and the TLR-1HL version was not yet on the market.
http://sidearmor.com/index.php?main_page=product_info&cPath=1_40&products_id=87

SpetzGear. I'm otherwise unfamiliar with its products. Do check with SpetzGear to ascertain if the TLR-1HL will fit.
https://spetzgear.com/BELTLOOP_HOLSTER/BLK-HOLSTER-LIGHT

Blackhawk. These probably fit the TLR-1HL version and may be able to be converted to use with a regular width belt; check with Blackhawk to be sure, however.
http://blackhawk.com/products/holsters-accessories/holsters/duty/level-3-light-bearing

I suspect Safariland has a holster, but its website hasn't been updated very well.

 

Thanks very much for the leads. I will check them out.

I wanted to love BladeTech (they are local to me) and their shells are gtg but I cant stand their attachment systems. Had nothing but problems with them. ymmv.

 

Thanks very much for the leads. I will check them out.

I wanted to love BladeTech (they are local to me) and their shells are gtg but I cant stand their attachment systems. Had nothing but problems with them. ymmv.

Bladetech makes the tek-lok. It's a great attachment system.

 

I just purchased a Bianchi UM922 (Safariland part no. 17014B) via Amazon for my Glock 20 Gen 4. It fits but just barely. Since it is nylon, I suppose it will stretch to accomodate the barrel. Sure is a better fit than the m12.
But there is a problem. Before ordering this holster, I called Safariland and asked it the M13 chest carry would work with this UM922 and the rep. said yes it would work the same. However, when I got it, I found out that the M13 chest carry will not work with the UM922 because of the plastic trigger guard on the newer holster. There is no place to connect the "wire adapter unit" to the "rubber retention grommet" (Step 4 on the M13 instructions) because this holster does not have a rubber retention grommet. How can I hook up this UM922 holster to the M13 chest harness? Thank you for your help. - Sidney

 

I like the inexpensive Glock sport/combat holsters...