I have an Stag Varmint 556 AR15 with a 24" barrel, rifle length gas tube and A2 buffer and spring. I ordered a PSA 16.1" upper with BCG and CH. I was hoping I could just swap out uppers but some simple research has alerted me that I also may need to swap out the buffer and spring.
What say ye experts?
- Do I need to swap out buffer and spring to make the 16" barrel and mid-length gas tube work on my existing lower configured for a 24" barrel and rifle length gas tube?
- Is there a buffer and spring that will work with either barrel/gas tube so i can swap uppers without changing anything on the lower?
I'm new to the AR platform, thanks for your help.
What say ye experts?
- Do I need to swap out buffer and spring to make the 16" barrel and mid-length gas tube work on my existing lower configured for a 24" barrel and rifle length gas tube?
- Is there a buffer and spring that will work with either barrel/gas tube so i can swap uppers without changing anything on the lower?
I'm new to the AR platform, thanks for your help.