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AR-15 Assembled Upper Receiver 16 Mid-Length w/ FSB
Cartridge: 5.56 mm NATO
Military-Style Carbine Upper With Enhanced Reliability
This AR-15 5.56mm 16" Mid-Length Upper Receiver from Aero Precision replicates the standard military M4 upper with one important addition. It has a longer, mid-length gas system that helps slow gas velocity for improved reliability in cycling (over the standard carbine gas system). You get same form-factor as an M4 with reduced risk of M4-type reliability problems.
The AR-15 5.56mm 16" Mid-Length Upper Receiver comes fully assembled, lacking only a charging handle and bolt/carrier group, for shooters who prefer to choose those components to suit your specific needs. The 16" barrel of high-grade chrome-moly-vanadium carbon steel has a tough, corrosion- and scratch-resistant black QPQ finish (all other steel parts are Parkerized). It’s chambered for 5.56mm NATO military ammunition, so it will safely handle civilian .223 Remington ammo too.
- Forged 7075 T6 aluminum receiver, hardcoat anodized, matte black
- Ejection port cover & forward assist installed
- MID-LENGTH gas system
- Pinned gas block/front sight base with bayonet lug
- .250" dia. pivot/takedown pin holes
- Bolt/carrier group & charging handle NOT included
- Twist rate: 1-7
Wrapped around the Aero Precision AR-15 5.56mm 16" Mid-Length Upper Receiver’s barrel is an extra-length (to cover the longer gas tube) M4-style polymer handguard with a standard A2 flash hider parked up front on the business end.
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