Overview Reviews Product Description 8.5" 45 ACP Barrel for AR-15 1-16 twist Melonite/Nitride 4150 Chrome Moly 5/8x24 threaded Made in the USA Product Videos Custom Field Product Reviews (No reviews yet) Write a Review Write a Review × 8.5" 45 ACP Nitride Barrel for AR-15 Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name *Email *Review Subject *Comments