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AERO PRECISION
M4E1 ASSEMBLED UPPER RECEIVER 5.56 MID-LENGTH
AERO PRECISION M4E1 ASSEMBLED GEN 2 UPPER RECEIVER 16 MID-LENGTH
Mfr Part: APAR640251M7 815421023305 Aero Precision’s M4E1 5.56mm Mid-Length Upper Receiver comes fully assembled, lacking only a bolt/carrier group and charging handle - the two components most often replaced by customizers. "Mid-Length" refers to the gas tube, which is longer than the standard carbine tube to slow down gas velocity and actually improve reliability in cycling. This is actually a carbine upper, available with either a military 14.5" or civilian 16" barrel (see Gun Tech Note below). The core of the M4E1 5.56mm Mid-Length Upper Receiver is Aero’s forged M4E1 receiver that combines the looks of a machined receiver with "mil-spec" parts compatibility (including BCG and charging handle). It’s mated to Aero’s latest Gen 2 Enhanced M-LOK Handguard to form a monolithic assembly with a full-length Picatinny top rail, and plenty of attachment points for M-LOK-accessories. QD sling swivel sockets at the 3/6/9 o’clock positions. The extended handguard covers the low-profile gas block. Texturing milled into the flats gives you an enhanced grasping surface - plus, it adds to your gun’s unique appearance. Forged 7075 T6 aluminum receiver, Mil 8625 Type 3 Class 2 hardcoat anodized Ejection port cover & forward assist installed 4150 chrome-moly-vanadium barrel, 1-7" rifling, black QPQ finish Chambered for 5.56x45 NATO; accepts .223 Remington, too MID-LENGTH gas system Handguard: 1.78" inside diameter clears most muzzle devices and 1.5" suppressors A2-style flash suppressor installed - NOT pinned or welded 1/2"-28 tpi muzzle threads .250" dia. pivot/takedown pin holes Bolt/carrier group & charging handle NOT included All NFA rules apply Brownells Gun Tech™ Note: The M4E1 5.56mm Mid-Length Upper Receiver is available with a 14.5" or 16" barrel. The flash suppressor on the 14.5" barrel is not pinned or welded in place. Per the National Firearms Act, the muzzle device MUST be pinned and welded to achieve the minimum 16" OAL for a civilian rifle build. The 16" barreled upper has sufficient barrel length to meet NFA requirements without permanently attaching the flash suppressor.
Restrictions
- Is a 'Call to order' product.
Top takeaways
- The Aero Precision M4E1 5.56mm Mid-Length Upper Receiver is fully assembled but does not include the bolt/carrier group and charging handle.
- It features a mid-length gas system for improved reliability, a Gen 2 Enhanced M-LOK Handguard, and is made from forged 7075 T6 aluminum with a 16" barrel to meet NFA requirements.
- This upper receiver is compatible with mil-spec parts and is designed to accept both 5.56x45 NATO and .223 Remington cartridges.
Attributes
Cartridge: 5.56 mm NATO Colour: Black Contour: M4 Finish: Anodized Length: 16'' Make: AR-15 Style: Assembled Delivery weight: 2.177kg
Item details
US export classification: I(g)
AERO PRECISION M4E1 ASSEMBLED GEN 2 UPPER RECEIVER 14.5 MID-LENGTH
Mfr Part: APAR640231M5 815421022872 Aero Precision’s M4E1 5.56mm Mid-Length Upper Receiver comes fully assembled, lacking only a bolt/carrier group and charging handle - the two components most often replaced by customizers. "Mid-Length" refers to the gas tube, which is longer than the standard carbine tube to slow down gas velocity and actually improve reliability in cycling. This is actually a carbine upper, available with either a military 14.5" or civilian 16" barrel (see Gun Tech Note below). The core of the M4E1 5.56mm Mid-Length Upper Receiver is Aero’s forged M4E1 receiver that combines the looks of a machined receiver with "mil-spec" parts compatibility (including BCG and charging handle). It’s mated to Aero’s latest Gen 2 Enhanced M-LOK Handguard to form a monolithic assembly with a full-length Picatinny top rail, and plenty of attachment points for M-LOK-accessories. QD sling swivel sockets at the 3/6/9 o’clock positions. The extended handguard covers the low-profile gas block. Texturing milled into the flats gives you an enhanced grasping surface - plus, it adds to your gun’s unique appearance. Forged 7075 T6 aluminum receiver, Mil 8625 Type 3 Class 2 hardcoat anodized Ejection port cover & forward assist installed 4150 chrome-moly-vanadium barrel, 1-7" rifling, black QPQ finish Chambered for 5.56x45 NATO; accepts .223 Remington, too MID-LENGTH gas system Handguard: 1.78" inside diameter clears most muzzle devices and 1.5" suppressors A2-style flash suppressor installed - NOT pinned or welded 1/2"-28 tpi muzzle threads .250" dia. pivot/takedown pin holes Bolt/carrier group & charging handle NOT included All NFA rules apply Brownells Gun Tech™ Note: The M4E1 5.56mm Mid-Length Upper Receiver is available with a 14.5" or 16" barrel. The flash suppressor on the 14.5" barrel is not pinned or welded in place. Per the National Firearms Act, the muzzle device MUST be pinned and welded to achieve the minimum 16" OAL for a civilian rifle build. The 16" barreled upper has sufficient barrel length to meet NFA requirements without permanently attaching the flash suppressor.
🔫 Upgrade your AR-15 with Aero Precision's M4E1 5.56 Mid-Length Assembled Upper Receiver! 🎯 Fully assembled for custom builds, ready for BCG & handle. Get started now! 💥
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