This video from Brownells features Steve and Caleb discussing five common mistakes made during AR-15 assembly and modification. They cover issues like improper accessory mounting that interferes with the gas block, misaligned gas blocks, over-torquing the castle nut, excessive upper receiver lapping, and incorrect buffer tube installation. The video emphasizes learning from these errors to improve reliability and accuracy, encouraging community knowledge sharing for both novice and experienced builders.
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