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Extended Barrel with Velocity Reduction

MP7 barrel low power bolt flute valve velocity fps inner barrel

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#1 i flip turtles

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Posted 12 May 2013 - 05:51 AM

I'm going to install a Falcon 6.03 TBB in my MP7 to get better accuracy but the Falcon barrel increases the gun's muzzle velocity to 500+ with .20s.  I'm afraid 500+ is way too high for most fields. I would use heavier bbs but fields always chrono with .20s or .25s and they usually never cater to bb weight.  

My goal is to try and bring down the muzzle velocity to ~400.  I'm thinking about installing the low power bolt but I feel like that may bring the velocity down to only 410~440.  So I'm thinking, what if I installed the flute valve inside the low power bolt?  I'm not sure whether or not the low power bolt already has a flute valve design pre-installed, so it would be appreciated if someone could look into that.

Please let me know if anyone has tried any of these set-ups.  thanks.

Edited by i flip turtles, 12 May 2013 - 05:54 AM.


#2 kwaispro727

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Posted 12 May 2013 - 08:33 AM

I believe there are mods for the low power bolts valve to reduce FPS.  Although I'm not 100% sure.

#3 akiraspeedstar

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Posted 12 May 2013 - 11:25 AM

Another user installed a LM4 length barrel and a CQB bolt and it shot like 330. The gas expands and.runs out if power should I say before it exits the barrel.

#4 Cariza

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Posted 12 May 2013 - 12:58 PM

Problem is that those low power bolts are out of stock everywhere I look. I want to lower mine but be able to switch back easily when playing in fields.

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#5 lorddave551

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Posted 12 May 2013 - 09:38 PM

View PostCariza, on 12 May 2013 - 12:58 PM, said:

Problem is that those low power bolts are out of stock everywhere I look. I want to lower mine but be able to switch back easily when playing in fields.

Sent from my Nexus 4 using Tapatalk 2

just fyi, i'm in the same boat as you, apparently KWA is waiting for the next shipment of low power bolts.  They wouldn't say exactly when but it sounds like they are on the way





Also tagged with one or more of these keywords: MP7, barrel, low power bolt, flute valve, velocity, fps, inner barrel

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