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You can find the Sons of Liberty Gun Works M4-EXO3 Complete Upper 13.7" (16" OAL) 5.56 here Fast FREE shipping on this item!
The Sons of Liberty Gun Works M4-EXO3 Complete Upper has a 13.7" (pinned and welded to 16" OAL) 5.56 Barrel with a Mid-Length gas system with an SOLGW NOX Flash Hider. The upper has an Sons of Liberty Gun Works 13" EXO3 M-LOK Handguard. Does NOT include BCG or Charging Handle.
| Barrel Length | 13.7" (pinned and welded to 16" OAL) |
| Caliber | 5.56 NATO |
| Barrel Material | 4150 Chrome Moly Steel QPQ Finish |
| Handguards | Sons of Liberty Gun Works 13" EXO3 M-LOK Handguard |
| Sights | None |
| Gas System | Mid-length |
| Muzzle Device | SOLGW NOX Flash Hider |
| Charging Handle | Not Included |
| Bolt Carrier Group | Not Included |
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