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Semi Vs. Full Auto


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Old June 22nd, 2010, 05:09   #1
Join Date: May 2010
Semi Vs. Full Auto

I know this is probably a weird question. But does firing in semi auto hurt your gun in the long run compared to full auto or are they the same?
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Old June 22nd, 2010, 05:51   #2
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Join Date: Feb 2010
Location: Thorold, Ont
well full auto will put more strain on your internals. Now if you use short bursts with full auto the internals will last longer.

Just like everything else with moving parts the more they move the greater the chance things go wrong
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Old June 22nd, 2010, 06:08   #3
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Each time you pull the trigger two contacts make an electrical connection. Just before they make a connection an electrical arc will travel from one contact to the other pitting or charring the contacts. This happens each time you pull the trigger so eventually you'll burn out the contacts (assuming there is no mosfet installed). In other words semi is worse for your gun (don't worry this happens over several thousand cycles and IF you do actually burn through the contacts they are replaceable for about 35 bucks)

It's generally recommended that you install some sort of mosfet, whether it's a basic unit (20-40 bucks) or a multi function firing computer (trigger master etc.) You'll notice a slight increase in ROF and trigger response as power is directly transfered to the motor via the less resistive mosfet.
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Old June 22nd, 2010, 06:54   #4
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Besides electrical, an AEG is happiest firing full auto. To fire semi, a mechanical set up forces the mechbox to stop after each cycle, so there will be more mechanical wear than full auto. Mind you, if you hose, then you'll be increasing the rate of wear a lot more.
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Old June 22nd, 2010, 07:30   #5
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I know from personal experience, +1 on the fact short bursts are easier on your gun than anything else.
Long bursts strain the motor and run higher risks of dry firing when you run out of ammo (one shot dry firing is like 10 shots firing BB's). Using semi auto only wears your motor, trigger block, trigger spring, and your trigger immensely. I go through about 800 rounds a scrim, about 350 of which are shot in semi. I've gone through 5 trigger springs and 4 triggers on my M4....
But if you've got a good piston (prometheus, system supercore, stock TM) and a good gunsmith, don't worry about the rest breaking down!
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