A&K M249 spring replacement

Tommygun_ted · March 17th, 2009, 18:33

I just purchased an A&K M249, but it's been upgraded to shoot 400 FPS. I need it to fire at 350 FPS, and the guy I bought it off of said all I need to do is replace the spring with a weaker one. However, I'm new to airsoft, and don't have a clue on what spring to buy or how to install it. I can search YouTube to find out how to do it, but would appreciate advice on what spring to buy. Thanks.

Capt. T/O · March 17th, 2009, 18:42

Please excuse my ignorance.
But.... why would you want to downgrade the SAW to shoot 350 fps?
Do you plan to use it indoors?

AngelusNex · March 17th, 2009, 18:43

Saddly only one thing i can help you with, which is that the A&K 249's mech box allows you to just remove one screw or pin or something like that at the back so you can easily replace the spring without completely taking apart the mechbox.

Tommygun_ted · March 17th, 2009, 18:57

I'm participating in border wars and the limit is 350 since there's going to be a lot of CQB stuff indoors, I'm definatly putting the stronger spring in after. I just need to know what spring to buy, I figured out how to replace the spring from YouTube, just need to know what spring I need

The Saint · March 17th, 2009, 19:24

http://www.airsoftparts.ca/store2/in...ex&cPath=66_82

Either Modify S90 or S100. S90 will likely be comfortably under 350fps, S100 might be slightly over (or not, depending on airseal). You could always buy both, they're not that expensive.

Danke · March 17th, 2009, 19:32

http://www.arniesairsoft.co.uk/revie...uct/797/cat/16

Here's a great walk through and reveiw on the A&K 249 including pics of the spring swap and more.

DENZILDON · March 17th, 2009, 19:34

And here is the spring replacement guide

YouTube - A&K M249 Minimi Spring change in less than 5 mins

AngelusNex · March 19th, 2009, 00:21

Go with an 90. it'll probably be around 315fpsish but you only want it for that game and it's mostly cqb so 315ish isn't bad.

Crunchmeister · March 19th, 2009, 00:58

The spring can be swapped in about 2 minutes with no tools as you can see in that video.at least with mine, the pin is easy to remove by hand. Seemed in the video he was having some trouble with his.

And just FYI, that gun shoots 400 stock. It wasn't upgraded to shoot at that velocity.

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March 17th, 2009, 18:33	#1
Tommygun_ted Trader rating Join Date: Mar 2009 Location: Shelburne Ontario	A&K M249 spring replacement I just purchased an A&K M249, but it's been upgraded to shoot 400 FPS. I need it to fire at 350 FPS, and the guy I bought it off of said all I need to do is replace the spring with a weaker one. However, I'm new to airsoft, and don't have a clue on what spring to buy or how to install it. I can search YouTube to find out how to do it, but would appreciate advice on what spring to buy. Thanks.

March 17th, 2009, 19:24	#5
The Saint Trader rating Join Date: Jan 2005 Location: Quebec	http://www.airsoftparts.ca/store2/in...ex&cPath=66_82 Either Modify S90 or S100. S90 will likely be comfortably under 350fps, S100 might be slightly over (or not, depending on airseal). You could always buy both, they're not that expensive. __________________ "The Bird of Hermes is My Name, Eating My Wings to Make Me Tame."

March 17th, 2009, 19:32	#6
Danke Prancercise Guru Trader rating Join Date: Oct 2007 Location: Danger Zone	http://www.arniesairsoft.co.uk/revie...uct/797/cat/16 Here's a great walk through and reveiw on the A&K 249 including pics of the spring swap and more. __________________ Airsoft, where nothing is hurt but feelings.

March 17th, 2009, 18:42	#2
Capt. T/O Trader rating Join Date: Dec 2006	Please excuse my ignorance. But.... why would you want to downgrade the SAW to shoot 350 fps? Do you plan to use it indoors?

March 17th, 2009, 18:43	#3
AngelusNex formerly Sepulcrum Trader rating Join Date: May 2007 Location: Kingston,ON, aka Funkasia	Saddly only one thing i can help you with, which is that the A&K 249's mech box allows you to just remove one screw or pin or something like that at the back so you can easily replace the spring without completely taking apart the mechbox.

March 17th, 2009, 18:57	#4
Tommygun_ted Trader rating Join Date: Mar 2009 Location: Shelburne Ontario	I'm participating in border wars and the limit is 350 since there's going to be a lot of CQB stuff indoors, I'm definatly putting the stronger spring in after. I just need to know what spring to buy, I figured out how to replace the spring from YouTube, just need to know what spring I need

March 17th, 2009, 19:34	#7
DENZILDON Trader rating Join Date: Mar 2008 Location: Calgary	And here is the spring replacement guide YouTube - A&K M249 Minimi Spring change in less than 5 mins

March 19th, 2009, 00:21	#8
AngelusNex formerly Sepulcrum Trader rating Join Date: May 2007 Location: Kingston,ON, aka Funkasia	Go with an 90. it'll probably be around 315fpsish but you only want it for that game and it's mostly cqb so 315ish isn't bad.

March 19th, 2009, 00:58	#9
Crunchmeister Trader rating Join Date: Nov 2007 Location: In your bedroom going though your underwear drawer	The spring can be swapped in about 2 minutes with no tools as you can see in that video.at least with mine, the pin is easy to remove by hand. Seemed in the video he was having some trouble with his. And just FYI, that gun shoots 400 stock. It wasn't upgraded to shoot at that velocity. __________________ Last edited by Crunchmeister; March 19th, 2009 at 01:03..

A&K M249 spring replacement

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