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Product Discontinued by Manufacturer
Aero Precision M4E1-T 12.5in 5.56mm Complete Upper Receiver has been discontinued by Aero Precision and is no longer available. Our product experts have helped us select these available replacements below.You can also explore other items in the Gun Parts, AR 15 Parts, Rifle Parts, AR15 Upper Receivers yourself to try and find the perfect replacement for you!
ATTENTION! We currently do not ship this product to P.O. Boxes, AK, CA, CT, DE, HI, MA, NJ, NY, U.S. Territories, or select Colorado locations. Please see our policies for more information or a detailed list of locations.
Product Info for Aero Precision M4E1-T 12.5in 5.56mm Complete Upper Receiver
This complete upper receiver features the same tried-and-true construction and aesthetics as our M4E1 Threaded Upper Receivers, without provisions for a forward assist.![]()
Aero Precision M4E1-T 12.5in 5.56mm Complete Upper Receiver
M4E1 UPPER FEATURES:
- Forged from 7075 T6 aluminum
- Precision machined to M4E1 specs
- M4 feedramps
- Laser engraved T-marks
- Comes assembled, with port door and forward assist installed
- Accepts standard AR15/M16 components
- Handguard mounting platform is forged into the receiver
- Works with Aero Precision handguards but also fits most BAR-system handguards
- Barrel nut and wrench are included
S-ONE HANDGUARD FEATURES:
- Interrupted picatinny rail for optional attachments
- Full length MLOK attachment points at the 3, 6, and 9 o'clock positions
- Compatible with low profile gas blocks
- 1.3" Inside diameter
- 1.5" Outside diameter
- Compatible with mil-spec AR15 upper receivers and barrels
12.5" 5.56 PISTOL LENGTH BARREL FEATURES:
- Chamber: 5.56
- Length: 12.5"
- Twist: 1 in 7
- Threading: 1/2"x28
- Finish: QPQ corrosion resistant finish both inside and out
- Gas System Length: Pistol
- M4 Barrel Extension
- HP and MPI Tested
Package Contents:
- Aero Precision M4E1-T 12.5in 5.56mm Complete Upper Receiver
- M4E1 Enhanced Assembled Upper Receiver
- 12.5" 5.56 Pistol Length Gov Barrel
- Low Profile Gas Block and Pistol Length Gas Tube
- 10.3" S-ONE Handguard
- Product comes assembled
Ammunition




Related Products to Aero Precision M4E1-T 12.5in 5.56mm Complete Upper Receiver
Aero Precision M4E1-T 12.5in 5.56mm Complete Upper Receiver Unavailable & Discontinued Models
List of Unorderable Models
- Aero Precision M4E1-T Complete Upper Receiver, 5.56mm, 12.5in, Carbine Length, R-One M-LOK Handguard, Black, APAR712703M30 , MPN: APAR712703M30 , UPC: 840014616589 , Code: 29D-UFH-CSMP9-APAR712703M30
- Aero Precision M4E1-T Complete Upper Receiver, 5.56mm, 12.5in, Carbine Length, S-One M-LOK Handguard, Black, APAR712102M30 , MPN: APAR712102M30 , UPC: 840014616602 , Code: 29D-UFH-CSMP9-APAR712102M30
- Aero Precision M4E1-T Complete Upper Receiver, 5.56mm, 12.5in, Carbine Length, S-One M-LOK Handguard, FDE, APAR712112M30 , MPN: APAR712112M30 , UPC: 840014616619 , Code: 29D-UFH-CSMP9-APAR712112M30
- Aero Precision M4E1-T Complete Upper Receiver, 5.56mm, 12.5in, Carbine Length, R-One M-LOK Handguard, FDE, APAR712713M30 , MPN: APAR712713M30 , UPC: 840014616596 , Code: 29D-UFH-CSMP9-APAR712713M30

































































































































































































