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Systema M140 Irregular-Pitch Airsoft AEG Power-Up Spring (450~500 FPS)

3 Customer Reviews

by David H. on 11/24/2008
"ya it may look slow but you need to crono it before you dis it its systema you probly didnt install it right it dos do 450-500 475 is the middel ground that most people get
by Julio L. on 05/27/2015
"I got this and install it on my biodynamic m4 .. awesome !! Shoots 493-503 .. real good..

After three games it shoots 470-480. . I hope it stays there..
by jesse a. on 09/29/2008
"its alright probably not 450- 500 fps because it looks alot slower when you fire it maybe 390 fps over all pretty good if you got the matrix m14 you need this