A&K SR25 (PJ25) DMR Sniper review and upgrade to max level
Well it doesn't require long time to review this replica.
First because the internal part was as i expected.
Second the upgrade project i was planning to has been done, so i hope my review and upgrading process with some tuning may help those who are seeking how to build high level DMR sniper.
To the Beginner or having secondary gun
This replica can live with you for one year or even more depend on how you will use it, but at the same time don't expect to much.
The gun it self work good right out of the box you can accurately snipe target about 50 meter or so (but ask yourself this question: is it worthy to pay €247,- to snip people from 50 meter away?) any other full auto replica can do the same or even better, so what is the benefit here?
You will get to know when you dive deeply reading this review.
Gearbox
A bunch of Chinese materials:
A&K Gears set worthy to nearest rubbish.
A&K bushing set also worthy to nearest rubbish.
Another plastic air nozzle also to the nearest rubbish (guess what? this gun shot 450fps and they installed plastic air nozzle) they kidding me!
Another crappy cylinder head followed his friends to nearest rubbish.
There is a very small spring between the selector plate, this guy fall by himself so he know where he should to go.
The piston head sent to the nearest rubbish without discussion terribly sucks.
The sock piston is 19 teeth already AOEed by TG.com it's looks really good (no problem with it).
The spring is Guarder SP130 looks very good.
The trigger system is fantastic (i didn't even expected) got my golden thumbs up!
The low resistance gearbox wiring also good quality.
The cylinder is chrome bore-up which is fantastic.
It has Hi-torque motor (but what Hi-torque motor is this??) i don't know it's just black device with no trade mark or any other details (but honestly) it's damn strong and run like crazy.
The barrel is brass 510mm length and i think it's 605mm (it's work ok).
Bucking something black plastic no idea what is it or what barn is! but it was deported to nearest rubbish as well.
Now the whole story about hop-up chamber..
Will you believe me if i tell you the hop-up chamber casted wrong!
Yes..
The hop-up chamber has manufacturing flaw which is slant to the left from the front and to the right from the back (which is not fit in the center) not to mention it has hall in the top where your bb's can stock up there!
Oh boy..
Take look to the pictures:
Well this was known to me from the beginning so i wasn't count on A&K SR25 (PJ25) internals. My goal was just getting SR25 DMR sniper body only and fully upgrade it.
The external
Here where your money sit correctly:
The A&K SR25 (PJ25) has really well done made and replicate this gun.
The military black finishing and whole the body awesomely engineered plus no wobble, simply I'm speechless the picture below is talking..
Now this is very encouraging and worthy to build great DMR..
And here i should not to forget to thanks (1tonne) and some others from airsoftsniperforum whom spent not a little time helping me and assist me to make it happen.
My upgrade and tuning:
-11.1v lipo battery.
-StockLow resistance gearbox wiring.
-Stock trigger system.
-Modify 6mm steel bushing.
-SHS steel shims.
-SHS Aluminium red color SR25 / AR10 series air nozzle.
-SHS high speed steel gear set SR25.
-SHS piston 19 steel teeth (no AOE needed).
-Stock bearing mounted spring (is the best) no need to replace it.
-ICS aluminum cylinder head & piston head (oversize) this is a bore up set for the longer barrel types (510-530+mm barrels) note you need smoothly hammer the piston head to make it fit with the chrome bore-up cylinder.
(make the cylinder head and the cylinder swim in silicone oil and then smoothly hammer around the cylinder head to make it fit inside the cylinder, it will take while like 5~6 minute to make fit perfectly. The benefit from this cylinder head it's silent design reduces sound and pressure to the gearbox plus it's double O-rings to improve amazing air seal with bearings piston head for high performance.
-Stock chrome bore-up cylinder.
-SHS Motor high torque long AXIS D-hole DJ0005 nvt.
-Modify Hop-up chamber M4/M16 type.
-Maple Leaf Macarone Flathop Bucking 70°
-Prometheus 6.03mm EG Barrel 509mm.
During the shooting test i found the Teflon tape gives me more accurate than the brass inner barrel spacer.
All what you need to upgrade you SR25 DMR Sniper.
The results below achieved under the following weather condition.
Wind speed 30 km/h
Temperature 15°C
Thanks to my neighbor who allowed me to use his backyard garden to test my upgrade.
KODAK camera tripod stand used to stabilize each shot.
3.5-10x50 M3 scope military version ACM.
Result correction (after measuring the backyard area following show):
The 20 meter is 16, 1/2 meter
The 15 meter is 11, 1/2 meter
The 10 meter was correct.
Target acquisition and size 5cm diameter each:
Used BB's
10 meter 0.20g bb's
15 meter 0,20g bb's (on the photo before correction)
20 meter 0,20g bb's (on the photo before correction)
The results below achieved outdoor by stander bb quality.
Well it doesn't require long time to review this replica.
First because the internal part was as i expected.
Second the upgrade project i was planning to has been done, so i hope my review and upgrading process with some tuning may help those who are seeking how to build high level DMR sniper.
To the Beginner or having secondary gun
This replica can live with you for one year or even more depend on how you will use it, but at the same time don't expect to much.
The gun it self work good right out of the box you can accurately snipe target about 50 meter or so (but ask yourself this question: is it worthy to pay €247,- to snip people from 50 meter away?) any other full auto replica can do the same or even better, so what is the benefit here?
You will get to know when you dive deeply reading this review.
Gearbox
A bunch of Chinese materials:
A&K Gears set worthy to nearest rubbish.
A&K bushing set also worthy to nearest rubbish.
Another plastic air nozzle also to the nearest rubbish (guess what? this gun shot 450fps and they installed plastic air nozzle) they kidding me!
Another crappy cylinder head followed his friends to nearest rubbish.
There is a very small spring between the selector plate, this guy fall by himself so he know where he should to go.
The piston head sent to the nearest rubbish without discussion terribly sucks.
The sock piston is 19 teeth already AOEed by TG.com it's looks really good (no problem with it).
The spring is Guarder SP130 looks very good.
The trigger system is fantastic (i didn't even expected) got my golden thumbs up!
The low resistance gearbox wiring also good quality.
The cylinder is chrome bore-up which is fantastic.
It has Hi-torque motor (but what Hi-torque motor is this??) i don't know it's just black device with no trade mark or any other details (but honestly) it's damn strong and run like crazy.
The barrel is brass 510mm length and i think it's 605mm (it's work ok).
Bucking something black plastic no idea what is it or what barn is! but it was deported to nearest rubbish as well.
Now the whole story about hop-up chamber..
Will you believe me if i tell you the hop-up chamber casted wrong!
Yes..
The hop-up chamber has manufacturing flaw which is slant to the left from the front and to the right from the back (which is not fit in the center) not to mention it has hall in the top where your bb's can stock up there!
Oh boy..
Take look to the pictures:

Well this was known to me from the beginning so i wasn't count on A&K SR25 (PJ25) internals. My goal was just getting SR25 DMR sniper body only and fully upgrade it.
The external
Here where your money sit correctly:
The A&K SR25 (PJ25) has really well done made and replicate this gun.
The military black finishing and whole the body awesomely engineered plus no wobble, simply I'm speechless the picture below is talking..

Now this is very encouraging and worthy to build great DMR..
And here i should not to forget to thanks (1tonne) and some others from airsoftsniperforum whom spent not a little time helping me and assist me to make it happen.
My upgrade and tuning:
-11.1v lipo battery.
-StockLow resistance gearbox wiring.
-Stock trigger system.
-Modify 6mm steel bushing.
-SHS steel shims.
-SHS Aluminium red color SR25 / AR10 series air nozzle.
-SHS high speed steel gear set SR25.
-SHS piston 19 steel teeth (no AOE needed).
-Stock bearing mounted spring (is the best) no need to replace it.
-ICS aluminum cylinder head & piston head (oversize) this is a bore up set for the longer barrel types (510-530+mm barrels) note you need smoothly hammer the piston head to make it fit with the chrome bore-up cylinder.
(make the cylinder head and the cylinder swim in silicone oil and then smoothly hammer around the cylinder head to make it fit inside the cylinder, it will take while like 5~6 minute to make fit perfectly. The benefit from this cylinder head it's silent design reduces sound and pressure to the gearbox plus it's double O-rings to improve amazing air seal with bearings piston head for high performance.
-Stock chrome bore-up cylinder.
-SHS Motor high torque long AXIS D-hole DJ0005 nvt.
-Modify Hop-up chamber M4/M16 type.
-Maple Leaf Macarone Flathop Bucking 70°
-Prometheus 6.03mm EG Barrel 509mm.
During the shooting test i found the Teflon tape gives me more accurate than the brass inner barrel spacer.

All what you need to upgrade you SR25 DMR Sniper.

The results below achieved under the following weather condition.
Wind speed 30 km/h
Temperature 15°C
Thanks to my neighbor who allowed me to use his backyard garden to test my upgrade.
KODAK camera tripod stand used to stabilize each shot.
3.5-10x50 M3 scope military version ACM.
Result correction (after measuring the backyard area following show):
The 20 meter is 16, 1/2 meter
The 15 meter is 11, 1/2 meter
The 10 meter was correct.
Target acquisition and size 5cm diameter each:
Used BB's
10 meter 0.20g bb's
15 meter 0,20g bb's (on the photo before correction)
20 meter 0,20g bb's (on the photo before correction)
The results below achieved outdoor by stander bb quality.
