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Full Stock for M4 Tactical - Finished, Pic added


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#21 Guest_allizard_*

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Posted 28 December 2008 - 09:51 PM

that's Erik_der_Rote's gun.  Not Spiggy.   One of Spiggy's gun is a STG 44.  He's a big time Classic Airsoft guy.

#22 apollolanding

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Posted 29 December 2008 - 05:53 AM

'Whoops thanks al I got confused when Spiggy put Erik's quote with the picture in his post.  I meant to say, great looking gun Erik.

Ahhh the Sturmgewehr 44... The first assault rifle.  Great gun that the Russians improved upon with the AK and the Swiss perfected with their 55x series.  I'd love to own a semi-only real steel to go with my AK and future SA 556 SWAT purchase.  A history of gas-piston assault rifles hanging on the wall... and shooting at the range.

Apollo

#23 Erik_der_Rote

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Posted 29 December 2008 - 11:24 AM

...update concerning the full stock:

the ICS full stock doesn't fit.
the tube on the lower receiver - that mounts the receiver end plate and the stock tube - is too long.
doesn't seem to come off either...huh?

so there's my question:
which stocks (brand & type) will fit my KWA without major modifications?
i want to get rid of this waggly-wiggly-wobbly standard retractable stock... and make the gun look more unique.

has any1 ever mounted a full stock on a M4 Tactical?


greez, Erik

#24 Guest_allizard_*

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Posted 29 December 2008 - 03:28 PM

Erik, why don't you give us a call?  Those M16 stock on our gun will certainly fit your S-tactical.

#25 Erik_der_Rote

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Posted 29 December 2008 - 04:27 PM

thanks for the hint!
this didn't come into my mind because i haven't found any M16 items in the pro shop.
but i'm afraid shipping costs and customs duty will double or triple the stock's price.

it would be very kind of you, if you could post or pm me the price and s+h to austria...

regards, erik

#26 FPDoc

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Posted 19 January 2009 - 12:04 PM

CTR and UBR are kinda cool. I kinda like the Vltor e-mod stock. Don't like the M93 MSS. Looks like it belongs on a ray gun. The Magpul UBR is a newer version of the M93 and is more streamlined.

#27 Erik_der_Rote

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Posted 30 January 2009 - 03:22 AM

Posted Image

...finally i finished my project.

the VLTOR-Stock is more comfortable than a full stock and looks much cooler.
the forward grip is foldeable, the scope is 3-9 x 40 with flip-caps, Gemtech HALO Silencer.
i added a Modify Bore-Up Kit (no hole), a MadBull 509mm 6.03 TB and a Modify 130 Spring.
hope, you like it!

there's just one thing.
using the setup listed above (0.20 BBs) the gun chronoes at 360 fps, when using the Prometheus 407mm 6.03 barrel it achieves 480 fps.
can any1 tell me WHY?
i want to get 420 fps with maximum accuracy... what can/should i do?

greez, Erik

Edited by Erik_der_Rote, 30 January 2009 - 05:58 AM.


#28 whiterabbit05

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Posted 30 January 2009 - 09:21 AM

480 fps with a 130 spring? Wow.

The Madbull barrel is probably too long for your cylinder.  What kind of cylinder do you have in it?

#29 Guest_Shogo_*

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Posted 30 January 2009 - 09:49 AM

30fps increase on a 6.01mm TBB I have seen. But I have never seen a TBB that gives you 80+fps jump.   Certainly not from a Prometheus 6.03mm  since I've two of their barrels.  That doesn't really make sense at all.

#30 Erik_der_Rote

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Posted 30 January 2009 - 03:38 PM

@whiterabbit: Type 0 Cylinder

@Shogo:
my calculation is: 400 - 420 fps stock, the bore-up kit may add some fps, so does the 130 spring (approx. 440 fps). adding the crappy madbull ... and the result is 370 fps.
on the other hand, taking the 440 fps as a basis, adding the "good" Prommy (and extra fps 'cause the barrel is too short for the cylinder) ... there we go: 480 fps

that's the only explanation i have for this "miracle" and you are right, it doesnt make any sense to me too - that's why i'm bothering you with my problem.

...but help is on the way!
due to my scientific nature i'm going make further tests... ordered a Prometheus 6.03 509mm today.
i'll report on the results...

greez, Erik

#31 Guest_allizard_*

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Posted 30 January 2009 - 07:16 PM

Interesting report.  Please keep us up to date.  

I have to agree with Shogo.  I haven't seen 80 FPS jump either.  But with a bore up.  Don't you need to "Warm up" the piston head first?!

#32 whiterabbit05

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Posted 30 January 2009 - 07:40 PM

View PostErik_der_Rote, on Jan 30 2009, 05:38 PM, said:

@whiterabbit: Type 0 Cylinder

I've seen people with Type 0 cylinder, Bore up, and M150 who only hit 490-500 fps.

So with just an M130 is amazing to me.

#33 Erik_der_Rote

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Posted 31 January 2009 - 12:49 AM

View Postallizard, on Jan 30 2009, 08:16 PM, said:

Interesting report.  Please keep us up to date.  

I have to agree with Shogo.  I haven't seen 80 FPS jump either.  But with a bore up.  Don't you need to "Warm up" the piston head first?!


...how do i "warm up" a piston head?  :blink:

#34 whiterabbit05

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Posted 31 January 2009 - 07:19 AM

Hold it down on full auto for 5 minutes.

#35 Erik_der_Rote

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Posted 31 January 2009 - 07:37 AM

...and what's the sense of this?

#36 whiterabbit05

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Posted 31 January 2009 - 09:30 AM

Oh sorry, I was just kidding about holding it down for 5 minutes, haha.

But the sense of warming up the piston head is after firing it a couple of times, the o-ring "heats" up and expands, making a better seal with the cylinder.




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