FMK AR1 Extreme Lower Receiver Polymer Multi-Caliber Black AR-15

The American series from Ruger consists of bolt-action rifles
chambered from 22LR rimfire up to large centerfire rifles such as the
30-06 SPG, and were designed to be an innovative yet affordable rifle
platform with models suitable for all North American game. This
particular example, chambered in 22LR, features interchangeable stock
modules that provide comb height options for both scope or iron sight
use. The lightweight black composite stock has sling swivel studs and
a 13.75″ length of pull. The Marksman adjustable trigger offers
a user adjustable pull weight, between 3 and 5 pounds. The
free-floated hammer-forged barrel has a target-crown, ultra-precise
rifling to provide exceptional accuracy, longevity and easy cleaning,
and a satin blued finish. It also features a 10/22-style extended
magazine release, a fiber optic front sight, an adjustable V slot
folding rear sight, and a 3/8″ rimfire scope base machined into
the receiver, which is also drilled and tapped for Weaver #12 bases
(not included).