Aero Precision M4E1 Pro Rifle
Aero Precision · Rifle · In Production · 2022
Also known as: Aero Precision M4E1 PRO, AP M4E1 Pro, M4E1 Pro Series Rifle
Overview
The Aero Precision M4E1 Pro Rifle is an upgraded, premium-tier AR-15-pattern semi-automatic rifle that sits above the company's standard M4E1 line. It is built on Aero's M4E1 enhanced threaded upper receiver paired with a fully ambidextrous M4E1 Pro lower featuring mirrored bolt catch, magazine release, and safety selector controls for both left- and right-handed shooters. The rifle centers on a cold hammer-forged (CHF) 4150 chrome moly vanadium steel barrel in a Ballistic Advantage Government profile, offered in lengths from 13.7 to 18 inches, with the flagship configuration using a 16-inch mid-length gas system and a 1:7 twist. A pressure-tested, magnetic-particle-inspected M4E1 Pro 5.56 bolt carrier group and an ALG-quality mil-spec trigger complete the fire-control package. The free-floating ATLAS or MOD 4 M-LOK handguard, machined from 6061-T6 aluminum, mounts to the threaded upper via Aero's proprietary anti-rotation attachment system, giving an extremely rigid platform with reinforced QD sockets. An A2 birdcage flash hider, Magpul furniture, EZ takedown and pivot pins, and Type III hard-anodized receivers round out a rifle available in black, OD Green, and Kodiak Brown finishes.
Specifications
| Weight (empty) | 2980 g (105.1 oz) |
| Weight (loaded) | 3550 g (125.2 oz) |
| Overall Length | 902 mm (35.51") |
| Barrel Length | 406 mm (15.98") |
| Action Type | Gas Operated Direct Impingement |
| Firing Mechanism | Hammer Fired |
| Trigger Type | Single Stage |
| Trigger Pull | 27 N (6.1 lbf) |
| Magazine Capacity | 30 rounds |
| Magazine Type | Detachable Box |
| Muzzle Velocity | 914 m/s (2999 fps) |
| Muzzle Energy | 1671 J (1232 ft·lbf) |
| Effective Range | 500 m (547 yd) |
| Maximum Range | 3600 m (3937 yd) |
| Barrel Rifling | Right Hand |
| Rifling Twist | 178 mm (7.01") |
| Number of Grooves | 6 |
| Frame Material | Aluminum Alloy |
| Barrel Material | Steel |
| Stock Material | Polymer |
| Finish | Hard Anodized |
Calibers
- 5.56x45mm NATO · primary · 5.56x45mm NATO — also known as 5.56mm NATO, 5.56x45mm, .223 Remington
Features
- Firing modes: Semi Automatic
- Feed systems: Detachable Box Magazine
- Safety mechanisms: Manual Safety Selector, Ambidextrous Safety Selector
- Features: Mid Length Gas System, Cold Hammer Forged Barrel, Free Floating Handguard, M Lok Rail, Ambidextrous Controls, Rotating Bolt, Flat Top Receiver, Picatinny Rail, M4e1 Threaded Receiver, M4e1 Enhanced Upper, M4 Feed Ramps, Hpt Mpi Tested, Forward Assist, Dust Cover, Flared Magwell, Enhanced Handguard System, Anti Rotation Tabs, Magpul Furniture, Flash Hider
Variants
- M4E1 Pro 13.7" Rifle - Barrel Length
- M4E1 Pro 14.5" Rifle - Barrel Length
- M4E1 Pro Complete Upper - Upper Only
Service history
Operators
- Civilian Sport Shooters · as M4E1 Pro
- Various US Law Enforcement Agencies · as M4E1 Pro
Production
Production years: 2022-present
Premium tier of Aero Precision's high-volume M4E1 complete-rifle family
Origin
Country of origin: United States
Notes
The M4E1 Pro line, introduced by Aero Precision in the early 2020s, was created to bundle the upgrades enthusiasts most commonly add to a standard M4E1 into a factory-complete rifle. The three headline differences over the standard M4E1 are the cold hammer-forged barrel (versus the standard button-rifled barrel), the fully ambidextrous lower receiver with a configurable 45/90-degree safety throw, and the included Pro-grade bolt carrier group and mil-spec ALG trigger. The MOD 4 handguard variant was designed specifically for shooters running night-vision aiming devices, using a seven-sided M-LOK profile with reinforced QD sockets. Because the platform is fully modular, buyers can select from multiple barrel lengths (13.7, 14.5, 16, and 18 inches) and handguard options while retaining the same ambidextrous Pro lower.
Background
Aero Precision began as an aerospace machining company in 1994 and moved into firearms components before offering complete rifles under the M4E1 name. As the standard M4E1 became a default recommendation for value-focused AR-15 buyers, Aero introduced the M4E1 Pro to capture shooters who wanted a factory build already fitted with the cold-hammer-forged barrel, ambidextrous controls, and upgraded fire-control group that they would otherwise assemble themselves. The Pro line leaned into the growing demand for ambidextrous ergonomics and night-vision-ready handguards, positioning it as a duty- and competition-capable step up while keeping the accessible pricing that built Aero's reputation for 'punching above its weight class.'