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suomi m31 owners please help

Discussion in 'Rifle Country' started by JBrady555, Oct 16, 2012.

  1. JBrady555

    JBrady555 Active Member

    Nov 23, 2011
    Panama City, FL
    Hey guys my suomi m31 just arrived at the FFL a few hours ago. The first thing I did was take it apart to clean and lube it up. I found a few videos on youtube plus a manual from TN on disassembly and I noticed that the guns in the videos and manual have two springs. One is a small diameter spring and one is a larger diameter. Well mine only has the small diameter spring in it. Am I missing a spring here? My gun came from centerfire systems. I am hoping that they just built them differently when converting them to semi auto. thanks for any info.

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