Expo Arms Patrol Series AR-15 Barreled Upper Receiver - Flash Hider - 16"

Manufactured by Expo Arms
SKU: XP-P-556-16
MPN: XP-P-556-16
Manufactured by Expo Arms
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Standard orders will ship out 2 business days if ordered by 3:30 pm CST, Monday-Friday. FFL orders will ship within 5 business days or less as long as we have the information for the transfer destination.



The Expo Arms Patrol Series Barreled Upper Receiver offers a high-quality option for any build. The heart of this barreled upper is the Expo MIL-SPEC forged upper receiver assembly, upgraded with T-marks for repeatable optic mounting. The 16" Patrol Series barrel with a 5.56 NATO chamber and reliable mid-length gas system and is fully Nitrided. The 15" Patrol Series handguard features M-LOK slots on 7 surfaces providing plenty of space for your favorite accessories. The Expo Arms Patrol Series Barreled AR-15 Upper Receiver is the perfect choice for your next AR rifle build.

  • 7075-T6 forged aluminum MIL-SPEC upper
  • T-Marked
  • 16" Patrol Series barrel
  • Mid-Length Gas System
  • Nitride finished barrel
  • 1:7 Twist Rate
  • 15" Expo Arms Patrol Series M-LOK Handguard
  • A2 Flash Hider

Expo Arms offers top-quality MIL-SPEC AR-15 components at rock bottom prices. Made in the U.S.A. and covered by Expo’s Limited Lifetime Warranty against manufacturer defects, material or workmanship problems, and even normal wear and tear.
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AssemblyBarreled Assemblies
Barrel CoatingSalt Bath Nitride
Barrel ContourSOCOM
Barrel Length16
Barrel LiningSalt Bath Nitride
Barrel Material41V50 Chrome Moly Vanadium Steel
BrandExpo Arms
Caliber Gauge5.56 NATO
Gas System LengthMid-Length
Gas System TypeDirect Impingement
Handguard15 in M-LOK Rail
Muzzle DeviceA2 Flash Hider
Thread Pattern1/2 X 28
Twist Rate1:7

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