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300 Blackout
16" Length
1:8 Twist
5/8-24 Threads
.750 Gas Block Diameter
Carbine Gas
Enlarged gas port for reliable cycling
- Item #: 300blk16
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Customizable Ar15 Uppers, Parts, & More!
Custom design your AR-15 Upper. MILLIONS of configurations!
Parts are in stock. Due to current demand, some orders may take several business days.
Current ship times are from 1 day to about a week.
We build our Ar15 uppers here in Clinton, MS, USA! Complete uppers are headspace checked and test fired before shipping.
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