Most Popular Upper Receiver for AR-15 / AR-10 / AR-9 Builds in 2026
The top 15 most-used upper receiver in 2026, ranked by how often they appear in builds tracked on AR15.Build. Updated nightly.
The upper receiver houses your barrel, bolt carrier group, and handguard — and its quality directly affects how everything fits and functions together. Most builders choose stripped uppers and assemble their own, but complete uppers are popular for those who want a ready-to-run package.
- 1
Bravo Company BCM4 Upper Receiver Assembly Flat Top With Forward Assist 1913 Rail
5 builds$129.00 - 2
Aero Precision AR15 Assembled Upper Receiver - Anodized Black - APAR501603AC
5 builds$118.99 - 3
LMT Monolithic Upper Receiver - AR-15 - MRP-L - M-LOK - Specwar - 11.5"
3 builds$912.60 - 4
Griffin Armament Mk1 Upper Receiver Assembled Aluminum Black
3 builds$113.95 - 5
BCM MK2 Carbine Barreled Upper MCMR-10 - 12.5in
2 builds$820.39 - 6
AERO PRECISION - 5.56X45 NATO ASSEMBLED UPPER RECEIVER NO AUTO SEAR CUT FOR AR-15
2 builds$119.99 - 7
COLT Monolithic AR-15 Pistol Complete Upper Receiver 5.56x45 NATO 11.5" Barrel
1 build$959.99 - 8
Luth-ar UR-01-M16-A A1 Upper Receiver 223/5.56mm Aluminum Black Hardcoat Anodize
1 build$180.69 - 9
PSA 16" Mid-Length 5.56 NATO 1:7 Phosphate 13.5" LtWt M-Lok Upper - w/ BCG, CH, & MBUS Sight Set
1 build$449.99 - 10
PSA 11.5" Carbine-Length 5.56 1/7 Nitride 10.5" Lightweight MLOK Upper - No BCG & CH
1 build$229.99 - 11
PSA 11.5" 5.56 NATO 1/7 Nitride 10.5" Lightweight Hex M-Lok Upper - Without BCG or CH
1 build$189.99 - 12
PSA 16" Mid-length 5.56 NATO 1:7 Nitride MOE Freedom Upper - Without BCG / CH - 7780446
1 build$199.99 - 13
PSA 16" 5.56 NATO 1/7 M4 Nitride Classic Wild Cat Gray Upper - No BCG & CH
1 build$199.99 - 14
PSA 16" Mid-Length 5.56 NATO 1:7 Nitride 13" Lightweight Hex M-Lok Upper No BCG & CH, ODG
1 build$259.99 - 15
Bravo Company 4URM4 BCM M4 Upper Assembly Multi-Caliber 7075-T6 Aluminum Black Anodized Receiver for AR-15
1 build$137.04
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