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Home » Internal Parts » Tune-Up Kits » Other FTK/TUK » MAG Aluminum 7075 Piston & 130% Spring for MP7 / V261 / MAC-10 Series Airsoft AEP. » Reviews MAG Aluminum 7075 Piston & 130% Spring for MP7 / V261 / MAC-10 Series Airsoft AEP. [FTK-MAG-AEP] $45.00 Displaying 1 to 2 (of 2 reviews) Result Pages:  1  Submited By: estion l. Date Added: Tuesday 21 September, 2010 web master is this spring the same as any other 130% spring? thanks Submited By: Chris S. Date Added: Wednesday 15 October, 2008 installed spring and piston, piston didnt work too well and shot only 250 fps which is same as stock so i put stock piston back in with the hardened spring and now get 280 fps. pretty good spring, but the piston kind of doesnt work for me, maybe if it was properly lubed or prepped it would work better. Displaying 1 to 2 (of 2 reviews) Result Pages:  1

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