AR-15 MK1 Mod 1-M Upper Receiver Assembly 223 Wylde M-LOK - MK114 Mod 1-M Upper Receiver 14.5 Barrel .223 Wylde

Primary Weapon Systems

Resumen

The AR-15 Mk1 Mod 1-M Upper Receiver Assembly from Primary Weapon Systems features a complete design that includes a 14.5-inch barrel chambered in .223 Wylde, allowing for versatility with both .223 Remington and 5.56 NATO ammunition. This upper receiver is tailored for AR-15 platform builders looking to enhance their rifle’s performance while maintaining a compact profile. It is commonly found in lightweight builds intended for tactical applications and home defense.