doughdog Posted May 20, 2009 Report Share Posted May 20, 2009 Hi i'm trying to install a kings arms recoil spring guide upgrade into my ksc gbb usp 45. Unfortunately i've taken out the original spring guide and taken it apart and i don't have a clue how to install the upgrade spring. Can anyone help please. I would be grateful for any assistance. Thanks Link to post Share on other sites
doughdog Posted May 21, 2009 Author Report Share Posted May 21, 2009 Heres a pic. The left arrows shows the original spring system and the right arrow shows the upgrade spring system http://i379.photobucket.com/albums/oo235/j...ecoilsystem.jpg Link to post Share on other sites
twin_cam Posted May 23, 2009 Report Share Posted May 23, 2009 I hate to be the bearer of bad tidings, but it looks like you bought a system 7 spring guide system. The system 7 has a feed ramp similar to the KSC Glocks and would work with that version spring guide. SD makes a 150% spring set for use with the stock guide/old system USP. Link to post Share on other sites
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