Aero Precision Apcr640439 M4e1 5.56X45mm Nato 30+1 16" Heavy Mid-Length Barrel, Black, 15" R-One M-Lok Handguard, Magpul Grip/Sl Carbine Stock, Ambi Charging Handle/Safety

Caliber: 5.56x45mm NATO
Barrel Length: 16"
Capacity: 30+1
Safety: Ambidextrous Manual
Stock Description: Adjustable Magpul SL
Muzzle: VG6 Delta Flash Hider
Barrel Description: Chrome Moly Vanadium Heavy
Twist: 1:7"
Barrel Length Range: 16" to 16.99"
Stock Finish Group: Black