Sons Of Liberty Gun Works M4-89 300BLK Barreled Upper Receiver Group - 9"

Sons of Liberty Gun works is committed to making high-quality parts and firearms, and they stand by their products for a lifetime, which is why each of them comes with a lifetime warranty from manufacturing defects. This upper receiver is an excellent foundation for an AR build, and it comes full of some of the best parts available. Choosing this will get you well along the way to making a rugged AR build that will last you years of hard use.

Features:

• 9” 4150 CrMoV (Chrome Moly Vanadium) Combat Grade Barrel
• 7075-T6 Upper
• A2 Flash Hider
• 5/8 x 24 Muzzle Thread
• 8” M89 Drive Lock Handguard with M-LOK

If you’re looking to complete a pistol or short-barreled rifle build in 300 Blackout, this is an excellent place to start. This has a high-quality receiver, including an ejection port cover, forward assist, and an integral Picatinny rail that extends the length of the handguard. The front sight block is low profile, meaning that this will be an optics-ready option. With this upper, you’ll need to supply a bolt carrier group and charging handle. With that in mind, this is the core of a rifle or pistol build that will give you a solid foundation upon which to add the parts you want to get an excellent quality firearm.