Gbls das Gdr 15 Skirmish Review

[mightyjebus]

I suppose it's time for an update on the GBLS. Well the AEG is still running solid and still turns heads when shooting in full auto during a game.

I bought 8 of the new PTS EPM 30/120 round GBLS magazines and the good news is the bolt lock works fine on the new version. I had to give 4 of them a good strip down and spray with silicon oil as they didn't want to feed but since the maintenance 3 of the 4 work fine. The last one actually has a damaged feed lip (weirdly at the front, not the top part where the BB exits). 

I've emailed PTS to see if they sell the feed lips as it looks to be an easy piece to replace but failing that I'll design a 3D printable version instead of buying another magazine.

it's very much a niche AEG because of the price but everyone who tries mine always has a smile on their face. 

 

[Mr Dellski]

Quick message to resurrect this thread back to life for those interested ?

Had some parts delivered today from Impulse101 for my GDR15 CQB - not seen anyone else speak of these parts anywhere, so here goes...

https://impulse101.jp/en/search?controller=search&orderby=position&orderway=desc&search_query=GBLS+DCI&submit_search=

DCI Guns light trigger spring, DCI Guns main spring spacers (x5 in the pack)  a DCI Guns QR Bolt Carrier End. This last part is fantastic as it saves loads of time.

I have all four GBLS main springs for mine (90, 100, 110 & 120) however the weakest M90 is the only one realistically playable for the sites I go to.

That being said, the M90 is a little anaemic and the next one up, the M100, a little on the spicy side.

Spacers are very well made. Cannot fault any of them.

- One spacer on the M90 with .25 gets yields a thirty shot average of 289.9FPS (0.98J) and 3FPS spread ?

- Three spacers on the M90 with .36 yields a thirty shot average of 260.6FPS (1.14J) and 4FPS spread ?

(275mm PDI 6.01mm barrel is in there too)

The QR Bolt Carrier End, made up of three pieces,  is superb and made with very tight tolerances.

Rock solid when locked in place and takes away the need for a heat gun to melt Loctite 480 on those two little screws every time the spring or whatever needs accessing. Then no need for more glue after.

Totally brilliant now I'm pulling the BCG to bits loads more experimenting with different number of spacer/BB weight/main spring combos.

QR Bolt Carrier End...

View attachment 128682

One spacer in there...

View attachment 128683

Rest of the spacers...

View attachment 128684

Light trigger spring. Will fit this another time...

My GDR15 CQB is one of the more recent ones (2022 updated version) so, at least on the M90 main spring, trigger pull is not too bad.

This will still lighten the first stage pull weight slightly -  but obvs not the break.

View attachment 128685

Overall, things are improved -  which is rare with this platform!

View attachment 128686

 

[Emergencychimps]

This thread seems to have died, but is there a current or relatively active gbls das resource on another platform? 

Just purchased one (not got it yet) and looking for what I need to do/get in to ensure it's ready for the first skirmish 

 

[Chev Chelios]

Have a good way to carry the hop allen key as the rubber beds in so you don't lose it. Something to load the mags that does not become a ball ache, I recommend the EMG electric speed loader.  Grease is not a big issue, I paid huge amounts for aeroshell when honestly white lithium is fine. Use the heaviest BB's you can afford. When done for the day press the thing in the image it removes tension on a spring. 

View attachment 140713

 

[Mr Dellski]

Sadly not that I know of bud. There are not many of us with these (or at least speak on forums here about them).

In saying that, I’ve learnt more or less all I need to from searching YouTube.

Have a good way to carry the hop allen key as the rubber beds in so you don't lose it. Something to load the mags that does not become a ball ache, I recommend the EMG electric speed loader.  Grease is not a big issue, I paid huge amounts for aeroshell when honestly white lithium is fine. Use the heaviest BB's you can afford. When done for the day press the thing in the image it removes tension on a spring. 

View attachment 140713

Yep, have a massive tube of Aeroshell here that will last me 20 lifetimes ? 

And concur, clicking that little tiny thing above is the way after use.

For mag loading, I use the ODIN one with the GBLS adapter. Have bought a couple of spares in case my original cracks from Cage Airsoft.

 

[Emergencychimps]

Anyone know of a work around to buying the nozzle tightening tool?

My rif dropped 70 ISH FPS and I think it's the nozzle (swapped the spring for a new M100 and was still 70 shy of what it was). 

I've literally just done an order from the cage Airsoft a day before I realised I needed it. 

 

[Mr Dellski]

Anyone know of a work around to buying the nozzle tightening tool?

My rif dropped 70 ISH FPS and I think it's the nozzle (swapped the spring for a new M100 and was still 70 shy of what it was). 

I've literally just done an order from the cage Airsoft a day before I realised I needed it. 

I don't know if I'd risk it bud.

Feel your pain though with ordering something than realising you need just one ore thing...

Been there. Many times.

I bought the right tool as last thing I'd want to do is mangle the nozzle or anything else in there for that matter.

 

[Chev Chelios]

If you have 5 mins spare any chance you can fill this form in https://4uadsmartairsoft.com/report_and_data/ to ask them to produce a version of the "4UANTUM MAGNUS PRO PRECISION AR HOP UP CHAMBER" compatible with the GDR15 please. Have been using one in my GHK and its head and shoulders above anything else on the market. Info vid https://www.youtube.com/watch?v=G6iE3FbTBx4&t=1698s&ab_channel=4UADSmartAirsoft

Also good resource https://nazebes.com/category/aeg/gdr15 in Japanese but goggle translate works well. Shows piston rack change, parts upgrades ETC. 

 

[Mr Dellski]

If you have 5 mins spare any chance you can fill this form in https://4uadsmartairsoft.com/report_and_data/ to ask them to produce a version of the "4UANTUM MAGNUS PRO PRECISION AR HOP UP CHAMBER" compatible with the GDR15 please. Have been using one in my GHK and its head and shoulders above anything else on the market. Info vid https://www.youtube.com/watch?v=G6iE3FbTBx4&t=1698s&ab_channel=4UADSmartAirsoft

Also good resource https://nazebes.com/category/aeg/gdr15 in Japanese but goggle translate works well. Shows piston rack change, parts upgrades ETC. 

Done bud ?

 

[Mr Dellski]

If you have 5 mins spare any chance you can fill this form in https://4uadsmartairsoft.com/report_and_data/ to ask them to produce a version of the "4UANTUM MAGNUS PRO PRECISION AR HOP UP CHAMBER" compatible with the GDR15 please. Have been using one in my GHK and its head and shoulders above anything else on the market. Info vid https://www.youtube.com/watch?v=G6iE3FbTBx4&t=1698s&ab_channel=4UADSmartAirsoft

Also good resource https://nazebes.com/category/aeg/gdr15 in Japanese but goggle translate works well. Shows piston rack change, parts upgrades ETC. 

View attachment 147846

 

[LMKipper]

I've sent them a message too - I've not really found the hop in my GDR lacking in any way but I'll be interested to try it if there's a noticeable gain.

 

[Mr Dellski]

I've sent them a message too - I've not really found the hop in my GDR lacking in any way but I'll be interested to try it if there's a noticeable gain.

I've been using a Psionic Tho-R Hop Up Bucking + Small Concave Nub in mine plus have a PDI 6.01mm Stainless Steel 275mm barrel.

That combo with BLS .32's has worked out amazing.

No problems at all.

Still, always ready to tinker at the next available opportunity ?

 

[JustSomeWildBear]

I've been using a Psionic Tho-R Hop Up Bucking + Small Concave Nub in mine plus have a PDI 6.01mm Stainless Steel 275mm barrel.

That combo with BLS .32's has worked out amazing.

No problems at all.

Still, always ready to tinker at the next available opportunity ?

Ive been running a DAS for a few months now. Love the platform but curious about upgrades. Was the hop and barrel upgrade worth it? Much better than the stock setup? What fps are you getting with .32s? I'm currently running .30s and want to squeeze as much performance as possible out of it.

 

[Emergencychimps]

I have done loads of searching for this and the only thing I can find is....leave it stock. 

If you want higher fps, put a bigger spring in, cage airsoft does them and swapping is pretty straight forward.