AR-15/M4 Flattop Upper Receiver Assembly - Upper Receiver Assembly

Bravo Company Ar-15/M4 Flattop Upper Receiver Assembly - Upper Receiver Assembly - Upper Receiver for AR-15 - view 1
Bravo Company Ar-15/M4 Flattop Upper Receiver Assembly - Upper Receiver Assembly - Upper Receiver for AR-15 - view 2
Bravo Company Ar-15/M4 Flattop Upper Receiver Assembly - Upper Receiver Assembly - Upper Receiver for AR-15 - view 3
Bravo Company Ar-15/M4 Flattop Upper Receiver Assembly - Upper Receiver Assembly - Upper Receiver for AR-15 - view 4
Bravo Company Ar-15/M4 Flattop Upper Receiver Assembly - Upper Receiver Assembly - Upper Receiver for AR-15 - view 5

Bravo Company

Overview

The Bravo Company AR-15/M4 Flattop Upper Receiver Assembly - Upper Receiver Assembly is a upper receiver. Compare prices from multiple merchants and find the best deal.

Specifications

MPNBCM4-UR-M4
AssemblyStripped
PlatformAR-15

Available Merchants

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August 2026 on GunPartPicker

Bravo Company AR-15/M4 Flattop Upper Receiver Assembly - Upper Receiver Assembly ranked #291 of the 690 upper receivers builders added on GunPartPicker in August 2026. Builders have been adding it to their builds on GunPartPicker since February 2026. All time, it ranks #131 of the 1,636 upper receivers builders have added. Builds with this upper receiver are mostly chambered in 5.56 NATO (75%, then .223 Wylde 25%), mostly on carbine-length gas (75%, then mid-length 25%), and nearly all AR-15.

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Frequently Built With

The part most often added in each category by the 26 builds that include this one

Build Configuration Breakdown

Aggregated and anonymized data showing how builders use this product

Caliber

75%
5.56 NATO75%
.223 Wylde25%

Gas System

75%
Carbine75%
Mid-Length25%

Builds Featuring This Part

See all 8 →

Builds in the community that include the Ar-15/M4 Flattop Upper Receiver Assembly - Upper Receiver Assembly

BuildPartsTotal
new 5.56 build build
new 5.56 build
10$824.93
For prs 6" build
For prs 6"
15$1128.57
16" build
16"
9$478.11
As a truck gun 18" build
As a truck gun 18"
19$1577.42
hog hunter 14.7" 5.56 build
hog hunter 14.7" 5.56
27$2969.88
8" foxtrot mike products build build
8" foxtrot mike products build
9$996.68
16" build build
16" build
23$1488.53
12.5" 5.56 build
12.5" 5.56
8$890.56

Customer reviews

5.0out of 5

1 global rating

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Top reviews

T
tiller.300
BCM flattop forged upper
Reviewed on April 11, 2026Verified with Build

BCMs forged flattop has M4 feed ramps cut correctly and the picatinny top is straight. Anodizing is the standard BCM matte black. Forward assist port and ejection port are dimensionally correct, all my parts dropped in. Solid mid-range upper that wont let you down.

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