Effects of Stronger PC Carbine Recoil Spring! by MCARBO | Monday, November 18, 2019 | 0 comment(s) Hello Chis,I intended to send you this picture earlier. It is a photo of a cartridge casing fired from my Ruger PC Carbine after I installed your... no categories. Read More Comments View All 0 Comment(s). You must be logged in to post comments.