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km4 sr7 magazine feeding problem


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#1 Edward Yuan

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Posted 10 March 2014 - 08:29 PM

Hello airsofters.  I have a new sr7 and I use the kwa 120 madcap magazines.  After insertion of magazine I fire one shot then take out magazine and there will always be 3 to 4 bbs that falls out unfired.  Why are all these bbs being released by the magazine and falls out of the magazine well. Will they eventually jam up inside the gun.

#2 iWar

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Posted 10 March 2014 - 08:39 PM

That is fine and normal... Its just the bbs that are not being fed all the way up the hop up... Once you remove the mag let the bbs fall out then dry fire it a few times to clear any bbs in the hop up...

#3 Chuck S

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Posted 11 March 2014 - 02:36 AM

Yep, that's how they all work.  The RM4 has an extended follower that will push all the BBs up to the feeding position to they all shoot, but like them all if a partially loaded magazine is removed several fall out.  I invert mine to shoot the last 3 or four.

It's vital to clear the gun after shooting to ensure it's empty.

-- Chuck

#4 Edward Yuan

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Posted 11 March 2014 - 08:19 AM

Thank you both for ur quick response.   You've made my worries disappear and my day started with one needed task taken care of.  Thanks u to thus forum as well.

#5 Rain Man

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Posted 14 March 2014 - 06:11 AM

Like the others have stated, this is normal for any gun/magazine. The spring doesn't have enough tension to push the last 3 or 4 up into the chamber. Also, it is very important to clear your chamber as well.

#6 Chuck S

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Posted 14 March 2014 - 02:41 PM

It's not an issue of spring tension.  Best explained by looking at an RM4 magazine follower which extends the same length as those 4 or 5 BBs up into the gun itself.

See the photos in this thread.

-- Chuck

#7 Rain Man

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Posted 17 March 2014 - 05:44 AM

View PostChuck S, on 14 March 2014 - 02:41 PM, said:

It's not an issue of spring tension.  Best explained by looking at an RM4 magazine follower which extends the same length as those 4 or 5 BBs up into the gun itself.

See the photos in this thread.

-- Chuck
oh oops! Sorry chuck :D

Edited by Rain Man, 17 March 2014 - 05:44 AM.





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