Marui M4 EBBr stock tube

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Major

Join Date: Apr 2008

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#1

Marui M4 EBBr stock tube

31 January, 2016, 18:59

Hi,

I recently noticed that my Marui M4 Socom is making a very loud metallic ringing sound coming from the stock tube (almost as loud as the gearbox). Obviously the blowback system is housed there but it has never been THIS loud before or even noticeable until recently.

Also, the stock tube can twist slightly to the left even with the delta ring fully tightened, so sometimes shifts when shouldered.

Any ideas what the issue is?

Many thanks in advance.

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