Sons Of Liberty Gun Works East India 5.56X45 Assembled Upper Medium 16'' Bbl W/Rail

The Sons of Liberty Gun Works East India 5.56X45 assembled upper receiver is a no-nonsense foundation for AR-15 builds that value quality metallurgy and combat-proven design. This 16-inch barrel upper comes pre-assembled and ready to pair with your lower receiver, so you can get to the range faster without sacrificing the precision engineering that separates a reliable rifle from a grocery-store special. Whether you're building your first AR or adding another upper to your safe, the East India delivers the essentials: a 7075-T6 aluminum upper, a 4140 steel gas block, a melonited gas tube, and a combat-grade barrel—all backed by a manufacturer with a reputation for no-compromise parts.

The upper arrives fully assembled with a GI barrel nut, but you're not locked in to any rail system. The design allows for straightforward disassembly so you can install the handguard of your choice, whether that's a free-float KeyMod, M-LOK, or classic quad-rail setup. That flexibility is critical for shooters who know exactly how they want their rifle to look and feel. The 16-inch barrel length is the Goldilocks zone for most shooters: enough velocity for hunting and long-range work, handy enough for carbine drills, and it meets all standard legal lengths without the paperwork.

Keep in mind that this is an upper receiver only—you'll need to source your own charging handle and bolt carrier group separately. That said, starting with a Sons of Liberty upper gives you a solid platform to build around. The 5.56 NATO caliber is proven across military and civilian shooters alike, affordable to shoot, and versatile enough for varmint hunting, tactical training, or casual range sessions.

Key Features

• 7075-T6 aluminum upper receiver for strength and durability
• Combat-grade 16-inch barrel in 5.56X45 NATO
• 4140 steel gas block optimized for reliability
• Melonited gas tube for corrosion resistance
• Pre-assembled and ready to attach to your lower receiver
• Disassemblable design to accommodate your preferred rail system
• GI barrel nut included

Specifications

Frequently Asked Questions

Does this upper come with a charging handle and bolt carrier group?

No. This is an assembled upper receiver only. You'll need to source a charging handle and BCG separately to complete your build.

Can I install a different handguard or rail system?

Yes. The upper is designed to be disassembled, allowing you to remove the included GI barrel nut and install the rail system of your choice.

Is this upper compatible with any AR-15 lower receiver?

This is a 5.56X45 NATO upper receiver. It will mate with any standard AR-15 lower receiver designed for that caliber. Always verify compatibility with your specific lower.

What does "combat grade" barrel mean?

Sons of Liberty applies this term to barrels built to their specifications for reliability and accuracy under demanding conditions. The exact performance characteristics depend on your ammunition and setup, so we recommend testing at the range to establish your own baseline.