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Service Advisory - MP7 Magazine BB Follower

Started by Guest_Allizard_* , Oct 30 2009 01:35 PM

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#1 Guest_allizard_*

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Posted 30 October 2009 - 01:35 PM

We have received a couple reports on MP7 Bolt Catch fail to lock when magazine is empty.  

The problem is due to damaging the BB Follower by continuously slamming/springing the BB Follower when magazine is empty.

MP7 Magazine
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This should be the correct position for BB Follower when BB is emptied in the magazine.
Posted Image

When BB Follower is pushed all the way up, it will engage the lock to catch the bolt.
Posted Image

When BB Follower is damaged.  It will caught outside of the mag well and will not push all the way up.
Posted Image

Hence the Bolt Catch arm will not engage and fail to catch the bolt when mag is empty.
Posted Image

Do not release magazine follower when the magazine is empty. Doing so will damage the magazine and magazine
follower.

#2 EmpireAirsoft

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Posted 08 January 2010 - 10:32 AM

So allowing the follower to spring upwards from the bottom of the magazine and slam into the top of the magazine causes it to deform over time because the metal is kinda soft to begin with correct?

#3 Spiggy

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Posted 14 January 2010 - 04:32 PM

 EmpireAirsoft, on 08 January 2010 - 10:32 AM, said:

So allowing the follower to spring upwards from the bottom of the magazine and slam into the top of the magazine causes it to deform over time because the metal is kinda soft to begin with correct?

It's not because the metal is kinda soft, but rather the spring is really-really powerful.  we opted to use a softer metal because it's cheaper to replace followers than magazine bodies and feed lips.  Had the material been hardened anything, the feed lip would probably tear through the mag body in some really awesome parts explosion.


This service advisory should apply to all models that use this type of locking mechanism.

#4 Vamp2269

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Posted 04 February 2010 - 12:34 PM

ha i avoid the issuse cause i never let it snap up the closest i came to doing that is letting it snap halfway and i only did it a couple of times. i used to have a crappy nonblowback pistol and i destroyed the mag by letting the folower spring up, and i was sure to not do the same with my mp7 mags.

#5 guitartilldeath

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Posted 25 February 2010 - 05:39 PM

how exactly do you preevent it from slaming onto the top? is this just saying "dont pull the spring down, be a dummy, then release it so it hits the top"?

#6 gcw360

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Posted 25 February 2010 - 07:05 PM

 guitartilldeath, on 25 February 2010 - 05:39 PM, said:

how exactly do you preevent it from slaming onto the top? is this just saying "dont pull the spring down, be a dummy, then release it so it hits the top"?
Yup!:gun:

#7 Vamp2269

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Posted 27 February 2010 - 10:29 PM

pretty much it

#8 vovi87

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Posted 30 July 2010 - 11:21 AM

Hi,


I've also bought an KWA/KSC MP7, and now I want to rebuilt it to fullautomatic mode,
because its an UMAREX Import Modell and this ones are changed to only semiautomatic.

So I've seen your site/forum concerning the MP7, and maybe you can help me to do this.

Do you have an idea, witch part UMAREX could be changed, that it just shoots semiautomatic ?

Or can you make a short instruction, and show the mechanic functions by selecting between semi an FA ?

Maybe some pictures can help too. :)



Thanks + kind regards

vovi87

#9 xKingSizex

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Posted 30 July 2010 - 04:08 PM

This thread is dedicated to the MP7 mag follower issue and is not a modification thread. Also, that model is designed to only shoot semi auto only in order to comply with the laws of that region. This forum is not for the use of this type of modification attempt.

#10 Kayl

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Posted 24 September 2011 - 07:06 PM

Where can I get more of these MP7 followers? Almost all of mine are damaged at this point, I need new ones. Warranty is voided, I need to buy new ones. I know how to fix this myself.

#11 Trevytrev

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Posted 25 September 2011 - 03:29 PM

i know that this is LOOSLEY related to this but is their any reason or way to damge the gun or magazine by racking the slide or releasing the slide catch on a usp?

#12 niko_gpsy

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Posted 26 September 2011 - 11:35 AM

 Trevytrev, on 25 September 2011 - 03:29 PM, said:

i know that this is LOOSLEY related to this but is their any reason or way to damge the gun or magazine by racking the slide or releasing the slide catch on a usp?
Not even close to being "loosely" related to this topic but it won't cause damage by doing that but it will cause wear and tear unnecessarily.

#13 xKingSizex

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Posted 26 September 2011 - 01:36 PM

We have the followers on order. Keep checking back with us for availability.

#14 SavageInsight

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Posted 11 March 2012 - 08:23 PM

So who *does* that?

   Step 1: Pick an *empty* magazine
   Step 2: Lock the bb feed push thingy (The magazine bb follower) down
   Step 3: Load the empty magazine
   Step 4: Click the follower in order to feed imaginary bbs

  If someone is used to loading several mags by clicking each first, then loading bbs, but misses one, I can understand, especially if they're the type to click the bbs into place as they load their MP7. Its still awkward.

I'm envious of anyone who can afford more than two or three magazines, and hope they're more clever about using them.

Edited by SavageInsight, 11 March 2012 - 08:23 PM.

#15 Trevytrev

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Posted 12 March 2012 - 04:53 PM

well, i brok my original magazine by just closing the bolt catch on the empty magazine. not releasing the follower for fun

#16 SavageInsight

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Posted 12 March 2012 - 06:12 PM

 Trevytrev, on 12 March 2012 - 04:53 PM, said:

well, i brok my original magazine by just closing the bolt catch on the empty magazine. not releasing the follower for fun

   I'll watch for that, thanks!
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