Sons Of Liberty Gun Works M4-89 300BLK AR-15 Rifle - 16"

SKU: M4-89-300-16
MPN: M4-89-300-16
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Standard orders will ship out in 1 business days or less 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. NFA items will take longer to ship and are dependent upon ATF processing times.

For individual Officer, First Responder, and Military pricing please make sure you are logged in. for details

Items that are regulated by the ATF have restrictions and requirements: 
•Your entire order will ship only to a Federal-Firearm License holder.
•Please contact your local FFL prior to placing your order to ensure they are still accepting transfers.
•A copy of your order/invoice as well as the current FFL license for your local dealer must be emailed to



Sons of Liberty is nearly fanatical about quality first and foremost. They believe that firearms are tools first and foremost, and have to be ready for use, even hard use, right out of the factory. The goal here is to give the user that is capable for combat right off the bat, without compromising on the quality in the least. This means making sure that the metallurgy is the best, the bolt carrier group is nearly perfect, and that the gas and buffer systems work great together. This commitment to quality, in addition to being tested in the shop, means that each of their rifles comes with a Lifetime Warranty against manufacturing defects.

  • 16” Barrel
  • 300 Blackout Caliber
  • Optics Ready

This is the premier fighting gun from Sons of Liberty, presented with premium furniture and a 16” barrel, making it ready for use as soon as you get it. This particular model is optics-ready: with the ample rail section on top of the receiver, all you have to do is mount your optic of choice and zero it. From there, you will have one of the toughest ARs on the market.
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Barrel Coating
Barrel Length16
BrandSons of Liberty Gun Works
Caliber Gauge300 Blackout
Gas System LengthMid-Length
Magazine Capacity30
Muzzle DeviceA2 Flash Hider
California Prop 65 warning

 WARNING: This product can expose you to chemicals, which are known to the State of California to cause Cancer and Reproductive Harm. For more information go to

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