Madbull Ultimate Hopup fitment problem

Con Murder · March 2nd, 2010, 18:07

The airseal issue in my friends A&K M4-S was solved when we put the madbull hop-up in. And yet we had fitment issues with the metal receiver, seemed the 'fins' of the hop unit were too thick. We shaved the receiver down a bit and it all went in nice and easy.

I liked the whole design of the unit and it really has improved groupings on his weapon.

coach · March 30th, 2010, 22:19

update: so the guarder clears solved my air leak issue but cause another one. slight oversight when I was installing the clears as they were slightly loose over a madbull TB. with the rubber not seated snugly, caused BB's to pull on the edge that contacts the nozzle which eventually cause a tear which in turn caused jams.

happened on my M4 with the ultimate hopup as well as Sunday on my MP5 with the CA new type hopup and MB TB.

I have now installed the blue MB rubber on the MP5 and will get more for the M4. will have to see if the air seal is consistent with using the clears.

Oddly, I used a stock marui rubber on my AK with the MB TB and it's shooting 100%. have shot more with that combination on the AK then the M4 and MP5 combined.

coach · March 31st, 2010, 00:40

Edit: opened the M4 and the guarder clear was not the culprit. Stripped grip screw and the magpul grip height adjust screw backed out. Fubard the motor and mechbox enough to cause a problem. New mechbox aquire so we'll see if the guarder clear can hold up.

As a side note. The CA metal receiver has a small opening to pass wires through on the bottom of the upper. A rectangular opening that I'm assuming was for front wired mechbox. Can easily mount and hide a 9v battery in the handguard and install a micro switch. Still going to try to use the guarder grip with 3 cr123's and possibly a pressure switch on the side.

JosiahJohn · January 22nd, 2013, 22:55

I know this is an old thread but Coach did that mean that your hop up unit with guarder clear and madbull barrel all fit together correctly?

leblanc74 · January 23rd, 2013, 11:27

I had my ultimate with it's rubber on a Prometheus barrel and yes I had a hard time, but with a little trimming, tab of 100% silicon oil, and patience...I works flawless....

coach · January 23rd, 2013, 11:44

Quote:

Originally Posted by JosiahJohn

I know this is an old thread but Coach did that mean that your hop up unit with guarder clear and madbull barrel all fit together correctly?

they will fit but the guarder clears are a tad loose on the madbull inner barrels. I am currently using madbull rubbers.

Shifty-C · January 23rd, 2013, 12:12

i had the same problem with the MB blue rubber they provided with the hop up chamber. it got stretched to shit. even with me gobbing all over it. I bought a couple different rubbers and got a nice fit with the guarder black i believe.

coach · January 23rd, 2013, 13:26

I just trim it so the c-clip fits. As long as its seated fine and the bump is properly located, it's fine.

Home	Forums	Register	Gallery	FAQ	Calendar
Retailers	Community	News/Info	International Retailers	IRC	Today's Posts

British Columbia	Alberta
BCAC	EAR
Op-For	JOC
Northern Arms Airsoft	Skunkworx Airsoft
Airsoft Kelowna	RAAT
Prince George Airsoft	Manitoba
Saskatchewan	MAA
SK Airsoft	Ontario
PDW	Airsoft Ottawa
South Sask Mercs	Snow Dragons
Quebec	1st Ranger Platoon
PQAC	Wolfpack Tactical
1st Pathfinders Regiment	TTAC3
Quebec Airsoft
MTX Airsoft	Atlantic
FAQc	Atlantic Airsoft

March 2nd, 2010, 18:07	#16
Con Murder Trader rating Join Date: May 2009 Location: Lethbridge Alberta Canada	The airseal issue in my friends A&K M4-S was solved when we put the madbull hop-up in. And yet we had fitment issues with the metal receiver, seemed the 'fins' of the hop unit were too thick. We shaved the receiver down a bit and it all went in nice and easy. I liked the whole design of the unit and it really has improved groupings on his weapon. __________________ Con Murder Dark Rhino L.A. Airsoft

March 31st, 2010, 00:40	#18
coach aka coachster Trader rating Join Date: Mar 2008 Location: T dot	Re: Madbull Ultimate Hopup fitment problem Edit: opened the M4 and the guarder clear was not the culprit. Stripped grip screw and the magpul grip height adjust screw backed out. Fubard the motor and mechbox enough to cause a problem. New mechbox aquire so we'll see if the guarder clear can hold up. As a side note. The CA metal receiver has a small opening to pass wires through on the bottom of the upper. A rectangular opening that I'm assuming was for front wired mechbox. Can easily mount and hide a 9v battery in the handguard and install a micro switch. Still going to try to use the guarder grip with 3 cr123's and possibly a pressure switch on the side.

January 23rd, 2013, 11:27	#20
leblanc74 Trader rating Join Date: Oct 2007 Location: Coquitlam	I had my ultimate with it's rubber on a Prometheus barrel and yes I had a hard time, but with a little trimming, tab of 100% silicon oil, and patience...I works flawless.... __________________ My Collection: Seller/Buyer Feedback

March 30th, 2010, 22:19	#17
coach aka coachster Trader rating Join Date: Mar 2008 Location: T dot	update: so the guarder clears solved my air leak issue but cause another one. slight oversight when I was installing the clears as they were slightly loose over a madbull TB. with the rubber not seated snugly, caused BB's to pull on the edge that contacts the nozzle which eventually cause a tear which in turn caused jams. happened on my M4 with the ultimate hopup as well as Sunday on my MP5 with the CA new type hopup and MB TB. I have now installed the blue MB rubber on the MP5 and will get more for the M4. will have to see if the air seal is consistent with using the clears. Oddly, I used a stock marui rubber on my AK with the MB TB and it's shooting 100%. have shot more with that combination on the AK then the M4 and MP5 combined.

January 22nd, 2013, 22:55	#19
JosiahJohn Trader rating Join Date: Dec 2007	I know this is an old thread but Coach did that mean that your hop up unit with guarder clear and madbull barrel all fit together correctly?

January 23rd, 2013, 12:12	#22
Shifty-C Trader rating Join Date: May 2010 Location: Winnipeg, MB	i had the same problem with the MB blue rubber they provided with the hop up chamber. it got stretched to shit. even with me gobbing all over it. I bought a couple different rubbers and got a nice fit with the guarder black i believe.

January 23rd, 2013, 13:26	#23
coach aka coachster Trader rating Join Date: Mar 2008 Location: T dot	I just trim it so the c-clip fits. As long as its seated fine and the bump is properly located, it's fine.

Madbull Ultimate Hopup fitment problem

Doctor's Corner