Performance plus! Turn your standard AR-15 Rifle into a FNH 5.7 with a 16" barrel. Or choose the SBR 11" barrel. Both conversions offer plenty of zing!
Choose your barrel length. Then order ONLINE today!
AR-15 SBR Upper Assembly, 11" Barrel
AR-15 5.7 Upper Assembly, 16" Barrel
Please Note: Intended for use with carbine stocks and comes with a carbine (230g) buffer. An additional (233.5g) buffer is required for all "butt-stock" / A2 type lower receivers.
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