DY9 Island barrel

[slixx]

Same, I'm going to offload some Glock handguns next year for spring cleaning (college is not cheap) and I'm currently disassembling some slides to get cerakoted as well as optic cuts.

I saw on a Reddit thread that gen 5 slides are good to go as well, but current market prices on even stripped gen 5 slides is way too inflated. Saw one Ebay listing for easily the cost of a OEM Glock.

I believe the Gen 4 and 5 is essentially the same slide, just the front serrations are present on the gen 5. I thought about picking up a 19x slide and slapping it on the derya frame but then I priced it out and it just doesn't make sense. a 19x MOS slide complete is going for $500+, the island is $300 shipped and I don't need to do anything further to it. Slap on an optic and just run with it. Plus it will function and work on the frame and if not, it's covered under warranty. I'm waiting till next year when the DY9Z hit's the CA roster (fingers crossed).

 

[cali_jazz]

I saw a video from several months ago that mentioned the front site was not removable and some other issues with the slide cut fitment and RSM that were apparently corrected.

Does anyone know if the front site was made removable?

 

[arm3drv]

Decided to DROS a DY9 and saw this nasty accessory available for it in on the website. Can’t wait to put it on the stock Derya in a few days and see how flat it shoots. Same price as the gun, $300

Just DROS’d a DY9 today and also ordered the “Island” complete upper No tax & no shipping fee on the Derya Arms website

 

[homeslice]

I saw a video from several months ago that mentioned the front site was not removable and some other issues with the slide cut fitment and RSM that were apparently corrected.

Does anyone know if the front site was made removable?

it is removable, just nothing exists to replace it....

 

[cali_jazz]

it is removable, just nothing exists to replace it....

Hopefully soon, at least there is hope!

*Update 12-22-25 Derya confirms they are working on a suppressor height sight solution.

 

[jnorr]

Decided to DROS a DY9 and saw this nasty accessory available for it in on the website. Can’t wait to put it on the stock Derya in a few days and see how flat it shoots. Same price as the gun, $300

After shooting the DY9 island I can confirm that it’s better than gun for the price.. it shoots flat as he’ll and other than the first 10-20 rounds no malfunctions

 

[slixx]

After shooting the DY9 island I can confirm that it’s better than gun for the price.. it shoots flat as he’ll and other than the first 10-20 rounds no malfunctions

Have you put an optic on that island slide? I'm wondering how the co-witnessing will be like since there's no aftermarket irons available yet.

 

[jnorr]

Have you put an optic on that island slide? I'm wondering how the co-witnessing will be like since there's no aftermarket irons available yet.

They are not suppressor High sights… can’t really co-witness tbh

 

[cali_jazz]

They are not suppressor High sights… can’t really co-witness tbh

Meaning they are too low in the window or ?? What optic are you running?

 

[slixx]

They are not suppressor High sights… can’t really co-witness tbh'

Did some digging on reddit and found that it actually has some co-witness. Looks more like 1/4, could be 1/3. At least it has something without having to upgrade sights. Here's a pic he took from the rear. Now the 10 day just needs to come sooner!

 

[cali_jazz]

I've confirmed with Derya customer service gen 3 slides indeed fit, but the guide rod size difference will show a bit of a gap.

I'll do a live fire function test with the gen 3 slide sometime next year.

This will solve the gap issue: https://www.strikeindustries.com/si-g-sap1.html

 

[Number9]

This will solve the gap issue: https://www.strikeindustries.com/si-g-sap1.html

I just got this item in, and I can confirm this fits well with OEM Glock Gen 3 slides. Now for a range test in a few months

 

[slixx]

Here’s my gen3 slide on the Derya frame with and without the adapter bushing. Haven’t shot it yet but I don’t see why it wouldn’t function.

 

[cali_jazz]

Aaaannnd, it's gone!

 

[arm3drv]

Aaaannnd, it's gone!

Simple process

 

[slixx]

Aaaannnd, it's gone!

Yep... that was the first thing that went when I brought mine home too!

 

[slixx]

I love the way this trigger feels compared to my G19. The trigger shoe feels so much better than the factory glock as it doesn't stick out so far forward. I normally like flat shoes but I can live with this shoe.

Right out of the box, I was getting roughly 4.5lb, removed the factory connector and installed the DOT connector and was getting ~4lbs. I then purchased a TTI grand master kit and swapped all the components in and it completely dropped the weight and made this trigger feel so much better. Consistently breaks at 3lbs. The wall is defined and crisp with a great audible reset. I normally don't like swapping out the striker springs and trigger spring but I wanted to see how it shoots. I'm hoping no light primer strikes. Won't have time to go test it for a few weeks.

 

[cali_jazz]

I love the way this trigger feels compared to my G19. The trigger shoe feels so much better than the factory glock as it doesn't stick out so far forward. I normally like flat shoes but I can live with this shoe.

Right out of the box, I was getting roughly 4.5lb, removed the factory connector and installed the DOT connector and was getting ~4lbs. I then purchased a TTI grand master kit and swapped all the components in and it completely dropped the weight and made this trigger feel so much better. Consistently breaks at 3lbs. The wall is defined and crisp with a great audible reset. I normally don't like swapping out the striker springs and trigger spring but I wanted to see how it shoots. I'm hoping no light primer strikes. Won't have time to go test it for a few weeks.

Nice. Competition or Duty/Carry?

 

[arm3drv]

Island Barrel delivered this AM MD deleted & now no more LCI DY9 Island Complete

 

[ari_d_sparki]

After shooting the DY9 island I can confirm that it’s better than gun for the price.. it shoots flat as he’ll and other than the first 10-20 rounds no malfunctions

How many rounds through it now?
I would want to see minimum 3k rounds before any failures.