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AngryDad223

Specna ARMS H09 - FPS

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Hey,

 

So my buddy just received his H09 from patrol base, the gun is advertised at 310fps though in the box came a test card from the factory at 420 😱

 

Anyone know if Patrol base would of swapped the spring out or has he got a super hot AEG

 

Thanks 

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The test card always shows the FPS of the higher rates spring.

 

Some retailers don't downgrade them, but I'd expect Patrolbase would. 

In fact, I'm sure Patrolbase record the FPS on the delivery note/ invoice don't they?

 

Does he have a spare spring in the box?

If the downgrade spring hasn't been fitted, there'll be a sealed SP90 spring - usually in a green packet.

If it looks opened, it'll probably be the higher fps Spring.

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For anyone else looking here,

 

We spoke to Patrol Base this morning, they assured that the guns are downgraded when the get them and that the gun is 100% site legal.... 

 

The picture says it all

 

Super disappointed in Patrol base, now our weekend is likely ruined, we will loose our booking deposit and now have to get this downgraded at our cost.. 

 

 

 

 

IMG_20190314_171944.jpg

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Downgraded at your cost? At the very least Patrolbase should do it for you for free.

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Ah feck. Hopefully you've got the SP90 Downgrade spring in the box?

 

@AngryDad223 - is the castle nut on your buffer tube Knurled, like it can be unscrewed? 

If so, it has the "SAEC" spring change system and you can change the spring in two minutes. 

 

If not, you've got the "Enter & Convert" system, and you'll have lift the gearbox out the body.

 

You don't have to open the gearbox, so it's not quite as nightmarish as it sounds, bit it means taking the buffer tube off, the grip off, the mag release and the bolt catch.

 

This video is a great guide for getting to the back of the gearbox on the Specna's.

 

 

We can still have you up and running at the weekend. 😎

 

 

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There is another spring fortunately, @L3wisD its the enter and covert system so gearbox out jobby...

 

Thanks for the video, luckily its relatively easy change then... 

 

:D

 

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Yeah, it's not too bad to do. 

 

Take your time, keep the all screws together and you'll be fine.

 

The downgrade spring in the box usually is a bit pants  - you'll probably end up firing nearer 275-290.

 

I recommend the SP100 spring from @ak2m4 - it's good for 330fps (approx) in my Specna's

 

https://www.ak2m4.co.uk/internal-parts/springs/guarder-sp100

 

But for now, the spring in the box will get you playing at the weekend at least :)

 

Give me a shout if you need any help.

 

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Enter and convert system doesn't need the gearbox out to change the spring.

There are 2 E&C revisions. The first I believe uses a regular buffer tube that will need unscrewing with a long screwdriver down the buffer tube.

If it's the V2 E&C then this video shows how to get to the spring.

You remove the buffer tube and the QC spring guide should be looking at you.


 

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It depends what one you have.

 

That video covers the SAEC type. The giveaway is the Knurled buffer tube nut.

 

The Enter & Convert type is still the most prominent out of the two for some reason. I've never actually seen an SAEC in person yet.

 

jDhm8JK.jpg

 

 

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I always thought the E&C system was more than just a QC gearbox.

Still, it's not a major operation to get the spring swapped, a bit of a poor show from patrol base tho.

 

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I’d still get on to patrolbase and play bollox with them , what if you’d taken there word and rocked up at chrono on your gameday to be told “feck off that guns way too hot !” 🤬

not good at all . 

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