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CMMG 30D120A Barrel Sub-Assembly for AR-15 in .300 Blackout/Whisper. Looking to build a custom AR-15 upper group, this Barrel Sub-Assembly includes an M4 barrel extension for reliable function. Contour: Medium Taper. Material: 4140CM. Threaded: 5/8x24. Gas System: Carbine. Gas Block Size: .750. Barrel Length: 16.1. Barrel Twist: 1:7. Barrel Finish: Nitride. Firearm Fit: AR-15. Threaded Barrel: Yes. Condition: New. UPC: 815835016238. Mfg. Part Number: 30D120A.
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$199.28
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$189.04
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$199.28