We carry all of the best KAK pistol parts and accessories. KAK Industries brings innovation to the AR-15 pistol market with their ATF approved pistol products. Choose from a wide selection of AR pistol parts. Pistol stabilizers may look like stocks but the ATF classifies them as pistol accessories. Depending on your local and state laws, with KAK pistol products, you may be able to build an AR15 with a barrel under 16" without registering it as an SBR. Not having to pay the short barrel rifle tax stamp saves a ton of time and money.