JourneyMan84 Posted July 19, 2016 Report Posted July 19, 2016 Currently making my way through my first 308 build and have run into an issue of the BCG becoming stuck when charging the rifle. The build is not complete yet as I am still lacking handguard, barrel, and optic but do not want to proceed if I have an incompatible parts combo currently. The BCG will move freely if the rear take down pin is inserted halfway or fully removed, but will not let the BCG charge and return to home without some coxing. Current Installed parts list DPMS Lower DPMS low profile upper Aero Precision Nickle boron BCG DPMS 308 LPK Larue Tactical Grip Gieselle 2 stage trigger Group Raptor 308 ampi charging handle Strike industries forward assist strike industries UCG dust cover DPMS Buffer tube DPMS Rifle Buffer JP Rifle Buffer Spring Magpul Stock
shepp Posted July 20, 2016 Report Posted July 20, 2016 1 hour ago, JourneyMan84 said: Currently making my way through my first 308 build and have run into an issue of the BCG becoming stuck when charging the rifle. The build is not complete yet as I am still lacking handguard, barrel, and optic but do not want to proceed if I have an incompatible parts combo currently. The BCG will move freely if the rear take down pin is inserted halfway or fully removed, but will not let the BCG charge and return to home without some coxing. Current Installed parts list DPMS Lower DPMS low profile upper Aero Precision Nickle boron BCG DPMS 308 LPK Larue Tactical Grip Gieselle 2 stage trigger Group Raptor 308 ampi charging handle Strike industries forward assist strike industries UCG dust cover DPMS Buffer tube DPMS Rifle Buffer JP Rifle Buffer Spring Magpul Stock Welcome to the forum! Feel free to post in the intro section
survivalshop Posted July 20, 2016 Report Posted July 20, 2016 How about some photos of you Buffer assembly & Where your Receiver Extension ( Buffer tube ) is attached to the Lower Receiver. Sounds like its hitting something back there , any rub marks on anything , like inside the Receiver Extension ? Spring could be binding in there or the Buffer , hard to say with out photo's of your set up .
MikedaddyH Posted July 21, 2016 Report Posted July 21, 2016 How long is the buffer ??? You state it is a DPMS rifle buffer. Measure and count coils on spring. Measure length of receiver extension (buffer tube)… This will give us a base for diagnosis.
JourneyMan84 Posted July 21, 2016 Author Report Posted July 21, 2016 The receiver extension is a DPMS Rifle Length Tube- will measure this evening I took a few images of the extension mounted to the lower and there were some scrape marks on the bottom side of the tube. Would reference picture but unable to post currently. No scrapes or marks on Under side of BCG. Will post measurements tomorrow. Thank you for all your ideas and help so far.
JourneyMan84 Posted July 22, 2016 Author Report Posted July 22, 2016 The buffer spring has 27 coils and is this make and model found on Midway USA Jp Enterprises tuned & polished buffer spring 308 The receiver extension is 10 in long and was purchased from Luth-ar.com Still working on photos having trouble loading them unfortunately.
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