Bought this to replace my stock Echo 1 spring in my MP5 (Shot 415-417). I needed this product because my field limits the FPS to 350 due to the CQB scenarios. Put this sucker in the gun and what do you know, still shooting upwards of 385-390. Gonna have to keep it compressed until it settles down. Shot 2 hicaps through it and a midcap and still at 385.
Reason for 3/5: Only because the product did not do what the description said. Its a good spring, you will just get higher FPS then it says.
Consistent fps (385-390)
Its Systema, its not going to break
Shoots higher then 350, which is why I bought it
A bugger to get back in the Mechbox
2008-02-05 22:07:24 A. KUAN
For: Systema M100 AEG Spring
Can't go wrong with systema, I love their products, especially their guns,
I loaded this m100 spring into my G&P changed the f******(you know) hop up unit
G&P gives you, that leaks like water going through a sponge! Added a systema hop up
bucking, I was kinda hoping for the best to use this gun at AP since the fps estimate was
330-350, but when the gun was chronoed I got 375-380 consistent.... Oh well good product!
good buy expect 350+ if you change your units like I did. Makes your gun sound loud and deep
which I like a lot, not one of those loud hollow ugly sounds. Buy it it's cheap.
2008-01-10 14:27:01 F. SHATTLS
For: Systema M100 AEG Spring
Got this spring put into my CA M15A4 SPR...gets me exacly 350fps. Much better than the piece of shit the gun came with. I did however get systema gears, G&P polycarb piston, and systema piston head..so that also might be part of why its soo good. Overall a great spring if you dont want too much power.
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