Lewis Machine Tool LMT AR-15 5.56 11.5″ MPR-L Quad Upper Receiver BCG AR15

SOLD FOR: $1560

LSB#: 220204SA002

Make: Lewis Machine Tool (LMT)

Model: MPR-L Quad 9.25 Upper (Monolithic Rail Platform – Light )

Caliber: 5.56x45mm NATO

Barrel Twist: 1:7″. One rotation every 7 inches.

Barrel Length: Approximately 11 1/2 inches; 12 3/4 to the end of the muzzle brake.

Action Type: Carbine-Length, Gas Operated Semi-Auto Upper Receiver

Markings: The right side of the receiver is marked “LEWIS MACHINE & TOOL CO.” and “US PATENT # / US 8,234,808 B2 / US 8,561,337 B2”. The left side of the receiver is marked “CA PATENT # / 2485710” and “24217”. The top of the barrel is marked “MP 5.56 NATO 1/7 CB”. The rail is marked in increments of 2. The top is marked from “2-36” with a “T” prefix before each number. The left and right sides are each marked from “18-34”. The bottom is marked from “20-34”. The left uses an “L” prefix, the right uses an “R” prefix and the bottom uses a “B” prefix. The bolt is marked “AO” and “MP”.

Handguard Configuration & Condition: The receiver and handguard are made from a single piece of aluminum. The handguard has 4 sections of picatinny rail machined into it.

Sights / Optics: There are no sights installed. There are 4 sections of picatinny rail that can be used to secure an optic.

Type of Finish: Black Anodized Aluminum. Phosphate Barrel.

Finish Originality: Original

Bore Condition: The chrome lined bore is bright and the rifling is sharp. There is no erosion in the bore.

Overall Condition: This upper assembly comes with an LMT bolt carrier group and a charging handle. It retains approximately 97% of its metal finish. There are a few scattered light marks. The bottom of the receiver shows some thinning along the edges. The markings are clear. Overall, this upper assembly is in Fine Plus condition.

From lmtdefense.com/product/cqb-upper-receiver/ :
The patented LMT Monolithic Rail Platform, MRP™ upper receiver. The receiver and handguard are made from a single piece of forged aerospace aluminum. The barrel is held in place with a proprietary locking system that utilizes two locking bolts accessible from the right side of the receiver. The only tool needed is a standard T-30 Torx bit to tighten the bolts. This receiver requires the patented LMT monolithic barrel assembly which has a low profile gas block with straight gas tube.
The MRP-L QUAD 9.25 is the carbine length receiver designed for 10.5? barrels up to 18? barrels with quad rail at the 3, 6, and 9 o’clock positions.  This receiver sports 5 QD sling swivel attachment locations.

BCG: LMT Enhanced Bolt Carrier

Charging Handle: LMT Tactical 5.56 Charging Handle

Box, Paperwork & Accessories: None