The Aero Precision M4E1 rifle with 20" barrel gives you the up-to-date features of a modern AR-15 carbine, with the excellent reliability and accuracy of a full rifle. Compactness and maneuverability are great, even necessary in certain circumstances, but if you can accommodate a slightly larger package, the M4E1 20" rifle gives you the benefit of the standard rifle-length gas system's greater reliability AND a gentler recoil impulse. Result: you stay on target better for more rapid, accurate follow-up shots. The longer barrel also gives you extra velocity to reach out to targets beyond the "safe" range of a 14.5" or 16" carbine.
The Aero Precision team built the M4E1 20" rifle on their popular Upper Receiver with its integral handguard that provides exceptional rigidity, with no flex between the 'guard and receiver. Free-floats the barrel, too, for another notch of enhanced accuracy. Plenty of M-LOK® slots for mounting accessories exactly where you need them, plus Picatinny rail sections up top at the front and rear. Other features:
• Collapsible carbine stock
• Magpul® MOE® pistol grip
• 5.56 NATO chambering compatible with civilian .223 Remington ammo
• 4150 chrome-moly-vanadium barrel with 1-7" rifling & tough QPQ finish
• Rifle-length gas system
• M16-type bolt / carrier group
The M4E1 20" rifle comes with Aero's Gen2 lower receiver with a flared magwell for fast, mag changes and an integral triggerguard that bolsters the structural rigidity of the entire lower. There's an M4-style adjustable carbine stock and a standard A2 flash suppressor because… why replace parts that do their jobs just fine?
This version of Aero Precision's M4E1 rifle gets back to basics in AR-15 design where it counts in reliability, accuracy, and shooting comfort, while it gives you the benefits of a modern tactical carbine at the same time.