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..

Q Firearms covers 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. We confirm price and availability at checkout, before payment.

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.

Q Firearms added this item to the shop as a new arrival. Details come from the maker's published listing, in our own words. If you need a measurement, material or compatibility detail that is not shown, send us the question before ordering.

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.