With enhanced durability and improved function, the new and improved PSA PA10 Gen3 is here. The Gen3 model offers a black nitride stainless gas tube to better resist high heat and corrosion while maintaining a glossy black finish. All Gen3 PA10 models come with a dimpled barrel for ease of gas block replacement if you choose to do so. We have also included a newly designed click switch 3-position adjustable gas block so you can specifically tune to your load. The Palmetto State Armory PA10 Gen3 features a forged receiver set that has been designed with a relief cut geometry to allow the use of a wider variety of aftermarket bolt carrier groups. A carbine length buffer tube with a short, heavy buffer coupled with a standard PA10 buffer spring. All Gen3 PA10 rifles from Palmetto State Armory come equipped with a Toolcraft BCG, which ensures thousands and thousands of rounds will feed through the rifle and an EPT or two-stage nickel boron fire control group with a 4.5lb pull makes for an easy but controllable course of fire.