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M4E1 13.7" Complete Upper 5.56 NATO Mid-Length - ATLAS S-ONE

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$449.99
SKU:
APAR700307M5
Condition:
New
Shipping:
Calculated at Checkout

Out of stock

Product Overview

Note: This barreled upper receiver assembly has a barrel length under 16” and is therefore subject to all NFA rules and regulations. Know your local laws before purchasing. This Aero Precision M4E1 Threaded upper receiver group comes completely assembled with 13.7” 5.56 barrel and the ATLAS S-ONE M-LOK handguard. This barreled upper receiver group does not include BCG or charging handle allowing you to choose your favorites for your build. The upper receiver is, however, fully assembled with forward assist and dust cover. The M4E1 threaded upper is made from forged 7075-T6 aluminum with a billet machined look that matches the lower and handguard. The ATLAS S-ONE free float handguard is 12” and features a 1.3” inner diameter that surrounds the low profile gas block and carbine length gas tube. Features:
M4E1 threaded upper receiver
Forged 7075-T6 aluminum
Assembled forward assist and dust cover
12” ATLAS S-ONE M-LOK handguard
Hardcoat anodized
13.7” 5.56 NATO Ballistic Advantage barrel
Machined from Chrome Moly Vanadium
Mid-Length gas system
1:7 twist rate
Threaded 1/2x28
A2 flash hider
Salt Bath Nitride finished
Does not include BCG or charging handle 
The 13.7” barrel is machined from Chrome Moly Vanadium steel with a salt bath Nitride finish and a 1:7 twist rate for stabilizing heavier rounds. It is threaded 1/2x28 with an A2 style flash hider that has not been pinned and welded meaning this must be attached to a pistol lower receiver. High pressure tested and magnetic particle inspected ensure this barrel is accurate and reliable. Aero Precision takes some of the most state-of-the-art manufacturing techniques and equipment derived from their work in the aerospace industry and applies it to their products in the firearms industry. They have utilized their knowledge from years of building aircraft components to design and engineer AR-15 handguards, receiver sets, scope mounts, and more. They treat every product as if it were a precision flying machine and adhere to strict quality standards to ensure law enforcement, military, and civilian customers receive a product they can rely on. Assembled by SYA LLC to all manufacturer specifications. SPECIFICATIONS
Assembly Barreled Assemblies
Barrel Coating Salt Bath Nitride
Barrel Contour Medium
Barrel Length 13.7"
Barrel Lining Salt Bath Nitride
Barrel Material Chrome Moly Vanadium
Brand Aero Precision / Ballistic Advantage
Caliber Gauge 5.56 NATO
Gas System Length Mid
Gas System Type Direct Impingement
Handguard 12 in M-LOK Rail
Muzzle Device A2 Flash Hider
Thread Pattern 1/2 X 28
Twist Rate 1:7

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