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Adams Arms Midlength Base Upper 14.5" Pistol/SBR Piston Upper 5.56
Adams Arms Midlength Base Upper 14.5" Pistol/SBR Piston Upper 5.56

MSRP: $777.34
Sale Price: $449.95
JoeBob dun saved you $327.39!

Availability: Usually Ships in 24 Hours
Product Code: ADAMS-UA-14.5-M-B-556

Muzzle Device*:

***This item is an AR15 SBR/Pistol upper. All NFA laws apply! Must be used on NFA registered SBR lower OR pistol lower!***

The 5.56 Midlength Base 14.5" Upper is a standard mil-spec upper that incorporates the patented Adams Arms technology and the m4 style handguards. The midlength piston system will give you the benefits of a longer forearm by giving the user a longer, more ergonomic grip, a longer sight radius between the front and the rear sight for quicker sight acquisition and less felt recoil. The piston system parts and the barrel have been treated with our salt nitride Meloniting process making them harder and more corrosive resistant than hard chrome. Add the patented Adams Arms piston system and you'll have an upper that will run cleaner, cooler, and longer than any other AR upper you own.

This 14.5" Upper Receiver will need to have a muzzle device Pinned & Welded in order to meet the minimum 16" barrel length if you intend on installing this on a lower receiver with a stock.

Upper Receiver: A4 Flat-Top, Forged
Barrel Length: 14.5"
Barrel Contour: Government
Barrel Material: 4150 Chrome Moly Vanadium Steel
Muzzle Thread Pattern: 1/2"-28
Chrome Lined: No
Barrel Finish: QPQ Melonite / Black Nitride
Twist Rate: 1 in 7"
Chamber: 5.56x45mm NATO
M4 Feed Ramps: Yes
Bolt Carrier: 1-Piece w/Integral Piston Strike Face
Muzzle Device: A2 Flash Hider
Gas System Length: Mid, Short Stroke Piston Operated
Gas Block Diameter: 0.750"
Handguard: 2-Piece Polymer, Mid-Length
Sights: None, Single Rail Gas Block
Weight: 4.387 lbs

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