Marui Gas Blowback Unit Spring

Cinco Boy · May 27th, 2011, 14:47

Where the heck does this spring go? It belongs to a marui BBU.

Gunny_McSmith · May 27th, 2011, 14:56

you see on the side of the plastic nozzle theres like a squared/rectangular extension.... then there's some kind of room between it and the metal GBB housing? it should go there... (from what I can see in the picture...)

Since its there to push the nozzle back when the gun blows back... (= when you pull the nozzle forward, it should compress the spring...)

Cinco Boy · May 27th, 2011, 15:38

are you talking about this? Which way would the plastic part on the spring go in?

Gunny_McSmith · May 27th, 2011, 15:41

plastic part on the spring?

Cinco Boy · May 27th, 2011, 15:46

Yeah this

Gunny_McSmith · May 27th, 2011, 15:56

isnt there a hole on the matal BBU housing for that pin to fit?

PS: what pistol are you working on anyways...

Kos-Mos · May 27th, 2011, 16:05

That spring with the plastic pin is a safety spring...

The one that goes in the BBU would be shorter and smaller in dia.

I guess you have a Glock... so I am not sure where that one could go.. there is no safety on the frame like 191s and hicapas.

Cinco Boy · May 27th, 2011, 16:07

Yeah its a tm glock, it looks like the right spot to put it in tho, its just down to compressing the spring enough to fit the unit into the slide. Regardless, thanks Gunny

Gunny_McSmith · May 27th, 2011, 16:36

haha np man... sorry I only have experience with TM 1911/hicapas, and other pistols... no TM glocks yet...

sushicake · May 27th, 2011, 20:09

A glock 18c I see

Thats the return spring for the BBU, there's a little slot on the right side where it goes into. When you have the BBU half way into the slide you need to take a screw driver to compress the plastic nub so it goes into it's slot inside the BBU.

Also when installing the plastic nub faces forward towards the barrel.

And you have the plastic nub on the right way.

Hope this helps.

Cinco Boy · May 28th, 2011, 00:12

Quote:

Originally Posted by sushicake

A glock 18c I see

Thats the return spring for the BBU, there's a little slot on the right side where it goes into. When you have the BBU half way into the slide you need to take a screw driver to compress the plastic nub so it goes into it's slot inside the BBU.

Also when installing the plastic nub faces forward towards the barrel.

And you have the plastic nub on the right way.

Hope this helps.

Yeah that helped a lot actually, there is an overwhelming number of glock variant airsoft disassembly videos on youtube, but nobody disassembles beyond their inner barrel/hopup

sometimes its nice to know details, so thanks

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May 27th, 2011, 14:47	#1
Cinco Boy a.k.a. por-no Trader rating Join Date: Feb 2009 Location: Ontario / GTA	Marui Gas Blowback Unit Spring Where the heck does this spring go? It belongs to a marui BBU.

May 27th, 2011, 14:56	#2
Gunny_McSmith a.k.a. Palucol Trader rating Join Date: Mar 2008 Location: MTL	you see on the side of the plastic nozzle theres like a squared/rectangular extension.... then there's some kind of room between it and the metal GBB housing? it should go there... (from what I can see in the picture...) Since its there to push the nozzle back when the gun blows back... (= when you pull the nozzle forward, it should compress the spring...) __________________

May 27th, 2011, 15:41	#4
Gunny_McSmith a.k.a. Palucol Trader rating Join Date: Mar 2008 Location: MTL	plastic part on the spring? __________________

May 27th, 2011, 15:38	#3
Cinco Boy a.k.a. por-no Trader rating Join Date: Feb 2009 Location: Ontario / GTA	are you talking about this? Which way would the plastic part on the spring go in?

May 27th, 2011, 15:46	#5
Cinco Boy a.k.a. por-no Trader rating Join Date: Feb 2009 Location: Ontario / GTA	Yeah this

May 27th, 2011, 15:56	#6
Gunny_McSmith a.k.a. Palucol Trader rating Join Date: Mar 2008 Location: MTL	isnt there a hole on the matal BBU housing for that pin to fit? PS: what pistol are you working on anyways... __________________

May 27th, 2011, 16:07	#8
Cinco Boy a.k.a. por-no Trader rating Join Date: Feb 2009 Location: Ontario / GTA	Yeah its a tm glock, it looks like the right spot to put it in tho, its just down to compressing the spring enough to fit the unit into the slide. Regardless, thanks Gunny

May 27th, 2011, 16:36	#9
Gunny_McSmith a.k.a. Palucol Trader rating Join Date: Mar 2008 Location: MTL	haha np man... sorry I only have experience with TM 1911/hicapas, and other pistols... no TM glocks yet... __________________

May 27th, 2011, 20:09	#10
sushicake Trader rating Join Date: Dec 2008 Location: Markham, ON	A glock 18c I see Thats the return spring for the BBU, there's a little slot on the right side where it goes into. When you have the BBU half way into the slide you need to take a screw driver to compress the plastic nub so it goes into it's slot inside the BBU. Also when installing the plastic nub faces forward towards the barrel. And you have the plastic nub on the right way. Hope this helps. __________________ "Don't you know the first law of physics? Anything fun costs atleast $8" Last edited by sushicake; May 27th, 2011 at 20:13..

Marui Gas Blowback Unit Spring

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