Sons of Liberty Gun Works M4-EXO2 5.56 AR Pistol - SBA3 - 11.5"

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Handguns are regulated by the ATF have restrictions and requirements:
 •Your Entire Order will ship only to a Federal Firearm License holder
•Carriers and shipping methods are limited
•A copy of your order/invoice as well as the current FFL License for your local dealer must be emailed to ffl@primaryarms.



The SOLGW M4-EXO2 Pistol is a great entry level Complete AR-15 pistol that comes with all the features you want for a reliable, do-it-all gun built for duty. This model features an 11.5” barrel machined from 4150 chrome moly vanadium steel and QPQ Nitride finished inside and out. The six groove 1/7 twist rate is optimal for heavy 62 grain 5.56 NATO surplus ammunition. The pistol length gas system and appropriate gas port size ensures reliable function under any conditions and minimal recoil. The government profile barrel and gas system are protected by the EXO2 free float handguard with M-LOK slots for full customization potential. This AR pistol goes through a rigorous inspection and testing process to ensure the gun you receive will be reliable for years to come.

  • 11.5” 5.56 NATO barrel
  • 4150 chrome moly vanadium steel
  • HPT and MPI
  • QPQ Nitride finish
  • 1/7 twist rate
  • Pistol-Length gas system
  • 4140 steel .750” gas block
  • EXO2 M-LOK free float handguard
  • 1/2x28 with A2 flash hider
  • 7075-T6 aluminum Cerra forged receivers
  • Type III Class 2 hardcoat anodized black
  • Radian Raptor LT Charging Handle
  • Liberty Fighting Trigger
  • SBA3 Pistol arm barce
  • H buffer system with Sprinco spring
  • T-Marked upper
  • Dry film lube bolt carrier channel

  • Soft case
  • Three Okay Industries Surefeed 30 round mags
  • SOLGW Sticker and patch
  • Copy of US Constitution
  • Lifetime warranty certificate

The EXO2 handguard features the pinch-lock barrel nut attachment system which is one of the most durable on the market. It also features 45° M-LOK slots at the front for more light and accessory mounting options. The upper receiver is made from 7075-T6 aluminum Cerra forgings and type III class 2 hardcoat anodized black. The upper receiver comes with the forward assist and dust cover assembled as well as an SOLGW BCG and Radian Raptor LT charging handle. The inside of the receiver has a dry film lube applied to decrease friction with the bolt carrier for smooth function.

The lower receiver is decked out with aftermarket furniture like the SB Tactical SBA3 stabilizing brace and Magpul pistol grip for better ergonomics than standard Mil-Spec equipment. It utilizes a heavy buffer system for optimal reliability and low recoil when combined with the pistol-length gas system.

Sons of Liberty Gun Works is a custom rifle manufacturer in the United States that specializes on the AR-15 platform. They began producing purpose-built weapons for law enforcement and civilians alike and are given a lot of praise for focusing on the details that make an AR reliable. Function over form is what their rifles are known for and they are guaranteed to get the job done. From full rifles to individual parts, you can’t go wrong with SOLGW.
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Barrel CoatingSalt Bath Nitride
Barrel Length11.5
Barrel LiningSalt Bath Nitride
Barrel Material4140 Chrome Moly Steel
BrandSons of Liberty Gun Works
Caliber Gauge5.56 NATO
Gas System LengthPistol
Gas System TypeDirect Impingement
Muzzle DeviceA2 Flash Hider
Thread Pattern1/2 X 28
Twist Rate1:7

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