01-08-2019, 01:38 PM
oyster Wrote:This is the upper I purchased. Yes, I know it's entry level but so was my budget. https://www.ar15part.com/6-5-Grendel-Upp...fsg2rl.htm
It has a midlength gas system. The reason I believe it's over gassed is when you drop the mag out after shooting a round the top bullet in the stack is literally green and splotched like it had been in salt water for a week. When the .223 upper was on there it didn't do this. I also have a Radians charging handle that is supposed to help with blow back. Since I'm a lefty thats kinda helpful. Thanks for any info.
You need to load one round in the mag and fire it and see if the bcg locks back.
If it doesn't then you know you have gas issues.