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Originally, it was stated that all HK416 parts were expected to last a minimum of 15,000 rounds. For the M27 IAR, the parts life was listed as 10,000 minimum although that may be due to a harsher firing schedule b/c one could expect an IAR to be run harder than an assault rifle. AGR416 posted on another forum that his main armorer said that the current HK416N's bolts last 8000-10,000 rounds depending on firing schedule. That figure seems to be a bit lower than the M27's service life.
I'm just wondering if HK has revised the bolt life of all HK416 variants in production from 15K to 10K or if HK uses different alloys/heat treating processes for the bolts of different HK416 variants (ie HK416N), which would explain the bolt life differences.
I'm just wondering if HK has revised the bolt life of all HK416 variants in production from 15K to 10K or if HK uses different alloys/heat treating processes for the bolts of different HK416 variants (ie HK416N), which would explain the bolt life differences.