X-PRT 90 (FRT90) - FN PS90 is a trigger group for AR-pattern rifles, listed with what it is and what it fits in plain terms.

What is listed: Safe (S) — Mechanical safety blocks trigger movement.; Semi (1) — Standard PS90 semi-automatic operation.; Standard semi-automatic operation — Conventional trigger function with one pull per shot.; 17-4 stainless steel hammer — Replaces the factory polymer hammer; heat treated and nitrided.; 17-4 stainless steel out-of-battery sear — Replaces the factory polymer sear; heat treated and nitrided.; 6061 aluminum 3-position selector — Hard anodized; replaces the factory polymer 2-position selector..

Ordering from Top Gun Firearms? We ship to customers around all states where the item is legal to ship. Parts ship to your door where legal; check your state and local law before you order. What you see at checkout is the price you pay.

Fitment is the most common reason a part is returned. Check the platform in the title, compare it with the lower receiver and fire-control group you own, and message us if you are unsure which version you need.

New at Top Gun Firearms: this listing was added recently and is available to order now. We describe only what the maker publishes about the item, so no performance claims are made here. Read the title carefully and compare it with your own setup.

Questions about fit? Match the title to your rifle and trigger type, and ask before you order if anything is unclear. Listed as a new arrival and in stock.