Airsoft Canada - View Single Post - Spring size

etd · November 18th, 2009, 03:27

With some help from some ASC members I've Identified a problem with my M120 in my Sig 552 mechbox.

The issue is that the spring doesn't have enough room to fully compress in the gearbox due to a sorbo pad, Bearing spring guide and bearing piston head being added.

Someone suggested I swap out my M120 for a PDI type spring as they are normally shorter. Which spring/type of spring should I use to achieve no more than 400 fps? Keep in mind it needs to be as short as possible (length wise).

November 18th, 2009, 03:27	#1
etd Trader rating Join Date: May 2008 Location: North Bay, Ontario	Spring size - Sig 552 With some help from some ASC members I've Identified a problem with my M120 in my Sig 552 mechbox. The issue is that the spring doesn't have enough room to fully compress in the gearbox due to a sorbo pad, Bearing spring guide and bearing piston head being added. Someone suggested I swap out my M120 for a PDI type spring as they are normally shorter. Which spring/type of spring should I use to achieve no more than 400 fps? Keep in mind it needs to be as short as possible (length wise). __________________ etd/Carmelo - Team North Bay v3 Aeg specialist Last edited by etd; November 18th, 2009 at 03:40..