In the past, I have used high speed video to analyze various aspects of AR-15 operation. Today, I did some testing at the range with several action springs. This is intended to be an ongoing test, so all three action springs were brand new. They are: - Tactical Springs/Sprinco "Blue" recoil spring - Brownells M4 Recoil Spring - Chrome Silicon - Brownells AR-15/M4 Recoil Spring The test weapon was a 16" carbine gas AR-15 with a .063" gas port, H buffer, 5.56mm NATO chamber, M16/Auto bolt carrier, and AR-15 fire… Read More
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