Put the zing back into the rifle you thought was past its prime. Manufactured to precise tolerances, these high quality, replacement springs help keep your AR-15 functioning properly. Great for emergency spares or for assembling a parts rifle. Available singly, or in 3-paks. Mfg: Brownells SPECS: Materials and finish at least equal to OEM parts. Chrome silicon springs indicated by (CS). AR-15/M16 springs colors may vary.