MCR Belt-Fed Upper Receiver Semi 16.25" 5.56mm KeyMod

FightLite Industries · Upper Receiver

Best price

$3,500.00at Brownells

checked Sep 30, 2026

Buy at Brownells

Where to buy

Store	Price	Availability	Buy	Add to build
Brownells	$3,500.00checked Sep 30, 2026	Check store	Buy at Brownells

Prices and availability change often, so confirm on the store's site before you buy. We may earn a commission from these links.

About this part

The MCR Belt-Fed Upper Receiver Semi 16.25" 5.56mm KeyMod is a 16.25" 5.56 / .223 upper receiver from FightLite Industries. One store lists it, Brownells at $3,500.00.

Fits and works with

Caliber: 5.56 / .223 · Shop matching ammo
Bolt: Standard AR-15 (5.56 / 300 BLK / .350 Legend) · Bolt carrier groups
Barrel length: 16.25" · Handguards

Specifications

Manufacturer: FightLite Industries
Platform: AR-15
Caliber: 5.56 mm NATO
Barrel length: 16.25"
Length: 25

From the manufacturer

The FightLite Industries MCR Belt Fed AR-15 Upper Receiver allows you to convert your AR-15 from a standard, magazine fed rifle, into a multi-purpose belt-fed, that can also feed from a magazine. Simply attach the upper as you would any other, link up your ammunition and go to the range. This unique upper receiver includes a Picatinny rail mounted to the top cover, as well as Keymod handguards. 16.25” quick change barrel features a chrome lined bore & chamber. 1-7 twist stabilizes standard, military ammunition, and ½-28 muzzle accepts standard muzzle devices. Receiver is machined from 7075-T6 billet & features a Type III matte black anodized finish. 6-lug rotating bolt is more robust than a standard AR-15 bolt, and is designed for sustained fire roles. Feed tray is steel. Bolt carrier is semi-auto. Upper utilizes M249 SAW links. Upper weighs 7.45 lbs & has an OAL of 32.25”.