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Expo Arms
Overview
The Expo Arms Combat Series 11.5" 5.56 NATO barrel features a SOCOM profile and is designed for use with a carbine-length gas system. This configuration allows for quicker cycling and is ideal for builds that prioritize maneuverability and compactness, making it suitable for close-quarters engagements. You'll frequently find this barrel in compact AR-15 builds that utilize a carbine gas system and chambered in 5.56 NATO, providing reliability and performance in a short form factor.
Expo Arms Combat Series 11.5" 5.56 NATO Chrome Lined AR-15 Barrel - Socom Profile - Carbine Length
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Expo Arms Combat Series 11.5" 5.56 NATO Chrome Lined AR-15 Barrel - Socom Profile - Carbine Length ranked #131 of the 329 barrels builders added on GunPartPicker in October 2026. Builders have added it to their builds on GunPartPicker. Since April 2026, it ranks #84 of the 1,046 barrels builders have added. Builds with this barrel are nearly all chambered in 5.56 NATO, nearly all on carbine-length gas, and nearly all AR-15.
Updated · from real builds on GunPartPicker
We ranked every barrel by how often it shows up in real builds on GunPartPicker.
Read the guide: AR-15 Barrel Length & Brand Report →Check it against the live catalog:
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Builds in the community that include the Expo Arms Combat Series 11.5" 5.56 Nato Chrome Lined Ar-15 Barrel - Socom Profile - Carbine Length
| Build | Parts | Total |
|---|---|---|
![]() | 25 | $2043.53 |
![]() | 25 | $2043.53 |
![]() | 22 | $1718.63 |
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