XTS 16-Inch 5.56 NATO AR-15 Complete Upper Receiver

XTS 16-Inch 5.56 NATO AR-15 Complete Upper Receiver

Complete your next AR-15 build with the XTS 16-Inch Complete Upper Receiver chambered in 5.56 NATO. Built for dependable performance and everyday versatility, this upper is a solid choice for recreational shooting, training, competition, property defense, or a general-purpose rifle build.

The upper features a 16-inch barrel surrounded by a lightweight 15-inch free-floating M-LOK handguard. The free-floating design helps prevent pressure on the handguard from affecting the barrel while providing plenty of space for mounting lights, grips, bipods, sling hardware, and other M-LOK accessories.

A full-length Picatinny top rail provides ample mounting space for iron sights, red dots, scopes, and magnifiers. The low-profile gas block fits cleanly beneath the handguard, giving the upper a streamlined appearance and maintaining compatibility with modern accessory setups.

Chambered in 5.56 NATO, this upper is designed for use with both 5.56 NATO and .223 Remington ammunition. The barrel features standard 1/2x28 muzzle threading, allowing the use of a wide selection of compatible flash hiders, compensators, muzzle brakes, and other muzzle devices.

The upper is assembled with XTS components, including an XTS charging handle, forward assist, and ejection port cover. It is designed to fit standard mil-spec AR-15 lower receivers, making it a practical option for a new rifle build or an upgrade to an existing platform.

Features

• Chambered in 5.56 NATO
• 16-inch barrel
• Twist rate 1:7
• Standard 1/2x28 muzzle threading
• 15-inch free-floating M-LOK handguard
• Full-length Picatinny top rail
• Low-profile gas block
• XTS charging handle
• Forward assist and ejection port cover
• Multiple M-LOK accessory mounting positions
• Compatible with standard mil-spec AR-15 lower receivers
• Suitable for range, training, competition, and general-purpose builds

Bolt Carrier Group

Please review the selected product configuration before ordering. A bolt carrier group may be included or sold separately depending on the option selected.

Compatibility

This upper receiver assembly is designed for standard mil-spec AR-15 lower receivers. Always confirm component, ammunition, and muzzle-device compatibility before assembly or use.