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 Montana Gun Shop? We ship to customers around 56 counties · town and ranch. 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.

Every rifle platform has its own pin spacing, receiver width and parts. The title states which one this item is built for; if yours is different, choose the version made for it.

Montana Gun Shop 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.