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Blackbeard01

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So I have a b&t sportline mp5 that I'm looking to upgrade. I understand there were better choices but i dont exactly have the funds to go back. My question is will any v2 gear box fit in it? I know they are used in m4s but are these directly compatible or are there suitable differences? 

 
Blackbeard01 said:
So I have a b&t sportline mp5 that I'm looking to upgrade. I understand there were better choices but i dont exactly have the funds to go back. My question is will any v2 gear box fit in it? I know they are used in m4s but are these directly compatible or are there suitable differences? 
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the trigger assemble is different and i think the selector plate. what do you actually want to do have played a game with it? is it an ICS or classic army sports line? 

 
Blackbeard01 said:
So I have a b&t sportline mp5 that I'm looking to upgrade. I understand there were better choices but i dont exactly have the funds to go back. My question is will any v2 gear box fit in it? I know they are used in m4s but are these directly compatible or are there suitable differences? 
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Unless it is a plastic gearbox, its always preferable to keep the original gearbox and upgrade that. Drop in ones almost always need work just to get it to fit. 

MP5's are one of the hardest guns to take apart as well. Best get a professional to look at it. 

 
BigStew said:
the trigger assemble is different and i think the selector plate. what do you actually want to do have played a game with it? is it an ICS or classic army sports line? 
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Yeah, I've played a game with it already and loved it. I just really lacked in range and I've put a much stronger motor in it as the original was really sluggish. Also rhe battery space is ridiculously tight so need to run a mini lipo really. No, its b&t

Samurai said:
Why? What can't it do now?
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 My main concern is I've put a bigger motor in whichis crazy powerful, halfed the trigger response and then some but I'm paranoid its going to strip the gears. 

Asomodai said:
Unless it is a plastic gearbox, its always preferable to keep the original gearbox and upgrade that. Drop in ones almost always need work just to get it to fit. 

MP5's are one of the hardest guns to take apart as well. Best get a professional to look at it. 
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Id rather not send it away. I work as a mechanical engineer so I'm confidant I can learn to do it but the flipside to that is ive got no experience with gear boxes in airsoft guns and dont have a clue where to start.

Thankseveryone for the quick replies! 

 
Blackbeard01 said:
 No, its b&t
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B&T are a Swiss firearms manufacturer that also has a trading arm. They handle the Heckler Koch licencing for things like your MP5 airsoft gun which is manufactured by ASG (who probably actually just rebadge someone else's hardware in this instance).

 
Lozart said:
B&T are a Swiss firearms manufacturer that also has a trading arm. They handle the Heckler Koch licencing for things like your MP5 airsoft gun which is manufactured by ASG (who probably actually just rebadge someone else's hardware in this instance).
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Right... so what your saying is its probably rebadged asg rifle? 

 
Blackbeard01 said:
My main concern is I've put a bigger motor in whichis crazy powerful, halfed the trigger response and then some but I'm paranoid its going to strip the gears.
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It can strip the piston if not shimmed for good AOE (angle of engagement) and will burn the contacts if you don't have FET in there.

If you also use it on high ROF then plastic piston head and cylinder heads are much safer than metal ones to keep the gearbox from cracking.

 
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