BCM SS410 mid length AR-15 upper receiver group with MCMR-15 handguard at 16 inches is a complete URG ready to mount. SS410 stainless barrel is accurate. Mid length gas runs smooth. Excellent fit and finish across the assembly.






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Bravo Company
Overview
The Bravo Company Manufacturing Ss410 Mid Length AR-15 Upper Receiver Group features a complete assembly designed for the AR-15 platform, with a 16-inch barrel optimized for the 5.56 NATO caliber. Its mid-length gas system enhances reliability and reduces recoil, while the 1:8 twist rate provides versatility in stabilizing a range of bullet weights. This upper receiver group is commonly found in builds that prioritize a balanced shooting experience with a focus on 5.56 NATO ammunition.
Based on build data

Aero Precision M4e1 Complete Lower Receiver W/moe Sl Grip & Sl-S Carbine Stock
Lower Receiver
Yankee Hill Machine Complete Ar-15 Lower Receiver - M4 Stock
Lower Receiver
Geissele Automatics Llc Ar-15 Ssa X Lightning Bow Trigger
Trigger
Battle Arms Development Rack Ambidextrous Ar-15 Charging Handle - Mod C
Charging Handle
Daniel Defense Mfr Xl Free Float Ar-15 Handguard - M-Lok - 9"
Handguard
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Aggregated and anonymized data showing how builders use this product
| Product | Category | Times Built Together |
|---|---|---|
| Aero Precision M4e1 Complete Lower Receiver W/moe Sl Grip & Sl-S Carbine Stock | Lower Receiver | 25 |
| Yankee Hill Machine Complete Ar-15 Lower Receiver - M4 Stock | Lower Receiver | 20 |
| Geissele Automatics Llc Ar-15 Ssa X Lightning Bow Trigger | Trigger | 12 |
| Battle Arms Development Rack Ambidextrous Ar-15 Charging Handle - Mod C | Charging Handle | 12 |
| Daniel Defense Mfr Xl Free Float Ar-15 Handguard - M-Lok - 9" | Handguard | 10 |
| Aero Precision Ar-15 Breach Charging Handle Ambidextrous Small Levers | 9 |
| Platform | Percentage |
|---|---|
| AR-15 | 100% |
| Caliber | Percentage |
|---|---|
| 5.56 NATO | 100% |
| Gas System | Percentage |
|---|---|
| Mid-Length | 100% |
Builds in the community that include the Bravo Company Manufacturing Ss410 Mid Length Ar-15 Upper Receiver Group - Mcmr-15 Handguard - 16"
| Build | Parts | Total |
|---|---|---|
![]() | 8 | $1872.38 |
![]() | 12 | $1518.38 |
![]() | 23 | $3928.03 |
![]() | 29 | $3520.94 |
![]() | 12 | $1904.69 |
![]() | 9 | $1378.10 |
| 29 | $3854.68 | |
![]() | 8 | $2169.42 |
![]() | 10 | $1541.78 |
![]() | 25 | $2417.05 |
![]() | 20 | $2314.92 |
![]() | 14 | $1744.91 |
2 global ratings
BCM SS410 mid length AR-15 upper receiver group with MCMR-15 handguard at 16 inches is a complete URG ready to mount. SS410 stainless barrel is accurate. Mid length gas runs smooth. Excellent fit and finish across the assembly.
BCM SS410 mid length URG at 16 inches has tight fit between the upper and lower mating surfaces. No detectable play at the takedown pin lugs. Stainless barrel is accurate. The complete URG is ready to mount to any quality lower.