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Bushmaster 92194 A3 AR-15 Complete Upper ORC Flattop 223 Rem/5.56 NATO 16" Black
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AR-15 16" M4 Profile Barrel, 9x19mm, 1:10, Black Nitride
AR-15 8.5" M4 Profile Barrel, .223/5.56NATO, Parkerized Finish, 1:7 Twist
Anderson Manufacturing 300 Blackout 16" Barrel - 1:7 Twist - M4 Medium Contour - Carbine Length Gas System - B2-K00
US Contractor 350 Legend 16" Parkerized M4 Barrel - 1:16 Twist - Carbine Length Gas System
5.56 NATO 14.5" Parkerized M4 Barrel - 1:7 Twist - Carbine Length Gas System
5.56 NATO 10.5" Black Nitride M4 Profile Barrel - 1:7 Twist Carbine Length Gas System