A 9mm AR pistol might be the most fun of all the ways to shoot one of the most popular calibers. In an AR platform that is more compact and mobile than a full rifle build, you have the same low recoil versatility that 9mm offers. With our 9mm Pistol Upper Build Kit you can build your pistol with little hassle, low cost, and have it set up just the way you want it with all of the options that we keep available for you.
The KAK 1/2-28 9mm compatible Mini Compensator is made with high-quality material and a tough, durable finish. It is half an inch shorter than KAK Industry standard compensators and has a closed end with holes in the upward position. This compensator makes a great addition to your 9mm build.
The Matador Arms Montgo-9 Complete 9mm Upper fits most AR-15/AR-9 Lowers. This upper features a 5.5-inch barrel crafted from 4140 steel with a black nitride finish. Also comes with a non-reciprocating charging handel and no buffer is required. The billet aluminum upper receiver is hardcoat anodized to maximize its strength and durability.