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Expo Arms
Overview
The Expo Arms 5.56 NATO Complete Mil-Spec M16 / AR-15 Bolt Carrier Group features a chrome finish that enhances both durability and ease of maintenance. Designed in the M16 style, this BCG is built to function reliably in mid-length gas systems, ensuring smooth cycling and optimal performance. You'll commonly find this component in builds that prioritize precision and reliability, particularly those chambered in 5.56 NATO.
Based on build data
Strike Industries Extended Bolt Catch
Aero Precision Stripped M4e1 Ar-15 Lower Receiver - Special Edition - Freedom
Lower Receiver
Aero Precision Ar-15 Breach Charging Handle Ambidextrous Small Levers
Wilson Combat Ar-15 Billet Upper Receiver
Upper Receiver
Yankee Hill Machine Ar-15 Billet Upper Receiver - Stripped
Upper Receiver
DFA Modified Cycle System (MCS) RIFLE CALIBER with Right Side Folding Stock - Adaptor GEN 2
Stock AdapterAggregated and anonymized data showing how builders use this product
| Product | Category | Times Built Together |
|---|---|---|
| Strike Industries Extended Bolt Catch | 4 | |
| Aero Precision Stripped M4e1 Ar-15 Lower Receiver - Special Edition - Freedom | Lower Receiver | 3 |
| Aero Precision Ar-15 Breach Charging Handle Ambidextrous Small Levers | 3 | |
| Wilson Combat Ar-15 Billet Upper Receiver | Upper Receiver | 2 |
| Yankee Hill Machine Ar-15 Billet Upper Receiver - Stripped | Upper Receiver | 2 |
| DFA Modified Cycle System (MCS) RIFLE CALIBER with Right Side Folding Stock - Adaptor GEN 2 | Stock Adapter | 2 |
| Platform | Percentage |
|---|---|
| AR-15 | 69.2% |
| AR-10 | 23.1% |
| AR-9 | 7.7% |
| Caliber | Percentage |
|---|---|
| 5.56 NATO | 75% |
| .223 Wylde | 8.3% |
| .308 Win | 8.3% |
| 300 Blackout | 8.3% |
| Gas System | Percentage |
|---|---|
| Mid-Length | 41.7% |
| Carbine | 33.3% |
| Rifle | 16.7% |
| Pistol | 8.3% |
Builds in the community that include the Expo Arms 5.56 Nato Complete Mil-Spec M16 / Ar-15 Bolt Carrier Group - Chrome
| Build | Parts | Total |
|---|---|---|
 | 33 | $2799.36 |
 | 26 | $1145.68 |
 | 19 | $4426.56 |
| 20 | $1354.56 |
 | 10 | $920.27 |
1 global rating
lockup is positive and headspace was correct with my barrel. one note, the carrier was tight against the inside of a tighter upper for the first 100 rds, broke in after that and now glides clean. chrome looks sharp through the dust cover
