tksnkc Posted May 14, 2018 Report Share Posted May 14, 2018 Having issues with my 308 CM build. Have a 18” barrel with a Mid Gas system. Carbine buffer with standard 308 spring and weight from Aero. Manually all is fine, live fire I have a single shot gun. No marks, some ejections some no ejections but never a semi weapon. Have an adjustable gas block but no help since adding it Quote Link to comment Share on other sites More sharing options...
edgecrusher Posted May 15, 2018 Report Share Posted May 15, 2018 Need more details. Measurements on spring (and coil count), buffer and internal depth of buffer tube. Quote Link to comment Share on other sites More sharing options...
unforgiven Posted May 15, 2018 Report Share Posted May 15, 2018 I replaced the entire recoil system with Armalite parts, receiver extention,spring and buffer on my M5 FTF went away. That was with a NiBor BCG. Quote Link to comment Share on other sites More sharing options...
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