Echo 1/Modify SP100 AEG Spring
[02462 / MOD M100]
$12.72 $11.45
Displaying 1 to 2 (of 2 reviews) Result Pages:  1 
by N. HERNANDEZ verified buyer Date Added: Saturday 19 April, 2014
verified buyer
For: Echo 1/Modify SP100 AEG Spring
Product Information:
I got this spring for my A&K masada which was shooting at around 370-380 fps which was a little hot for my play style. I bought this spring and now my gun shoots right around 330 fps. The spring seems very sturdy and is non-linear to make it last a very long time. Putting the weaker spring in my gun also gave it much better trigger response and a higher rate of fire. For those looking to downgrade your fps for cqb, this is the spring to get.

Perfect fps for cqb (around 330)
Improved trigger response and ROF without any major, expensive upgrades to internals

by C. STRATTON verified buyer Date Added: Sunday 16 December, 2012
verified buyer
For: Echo 1/Modify SP100 AEG Spring
Product Information:
Bought this spring for a friends gun, needing to downgrade it to 350fps to qualify for the local indoor field.

This spring is quoted as a 330-350 fps spring(which is what 100M/S comes to. ~1 joule)
This put a brand new Echo1 m4 at 375 fps w/ .20

Looks like a good spring
Has the non-linear windings

Not much other than the labeling being misleading
Displaying 1 to 2 (of 2 reviews) Result Pages:  1 
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