Brownells Exclusive: Sons Of Liberty Gun Works M4-EXO3 Rifle Build Kit

Brownells and Sons of Liberty Gun Works (SOLGW) have teamed up to introduce an AR-15 parts kit called M4-EXO3 Rifle Build Kit. This kit is made by SOLGW and will be available only through Brownells. It includes everything needed to assemble an AR-15 with the exception of the lower receiver.

Brownells @ TFB:

You’ve seen what happens when Sons of Liberty Gun Works and Brownells partner up on unique products before, and now it’s happened again with the M4-EXO3 Rifle Build Kit.

This M4-EXO3 Rifle Build Kit includes every single component, less a lower receiver, you will need to build a high quality, 16in barreled, 5.56 chambered rifle, all in one box.

Want to build out an AR-15 rifle but unsure of what all parts you’ll need to buy, or confused about making sure the parts you do buy will be compatible?

This kit is for you.

In the first sentence of the quoted text above, they probably refer to the earlier released Brownells exclusive SOLGW/Geissele 13.7″ AR-15 upper.

Brownells/SOLGW M4-EXO3 Rifle Build Kit

The Brownells exclusive SOLGW M4-EXO3 Rifle Build Kit features a nitrided 16″ barrel chambered in 5.56x45mm with a 1:7″ twist rate and mid-length gas system. The muzzle is threaded with the 1/2×28 thread pitch and an A2 birdcage flash hider is included in the kit. The BCG is of an M16 pattern. The 15″ SOLGW EXO3 handguard has a top Picatinny rail and M-LOK slots on the sides and bottom. The flat top upper receiver is completely stripped so you must install the included dust cover and forward assist assemblies. The kit also includes all the components necessary for assembling the lower receiver. It comes with a 6-position buffer tube, B5 Systems Bravo stock and Type 23 P Grip pistol grip.

The Sons of Liberty Gun Works M4-EXO3 Rifle Build Kit is listed on Brownells’ website at a price of $1,299.99.

Pictures by Brownells ( and Sons Of Liberty Gun Works (

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