WHAT DOES AR-15 MAGAZINES MEAN?

This is a PM schedule I took from Jeff Gonzalez. I Permit my plinkers go until something breaks even though.besides which i will purchase "serious" things - yhm for rails, while They may be a tad outside of spec, continue to do the job well for me (the rails are a tiny bit shorter as compared to the spec)AR15.COM is the planet's most significant fi