Ruger No. 1

The Ruger No. 1 is a single-shot rifle, with Farquharson-style internal hammer falling-block action, manufactured by Sturm, Ruger & Co. It was introduced in 1967.[3] An underlever lowers the block allowing loading and cocks the rifle. Lenard Brownell, commenting on his work at Ruger, said of the No. 1: "There was never any question about the strength of the action. I remember, in testing it, how much trouble I had trying to tear it up. In fact, I never did manage to blow one apart."[4]

Ruger No. 1
Ruger No. 1 rifle (with underlever down to open action)
Type	Falling Block Rifle
Place of origin	United States
Production history
Designer	Bill Ruger
Designed	1966
Manufacturer	Sturm, Ruger & Co., Inc.
Unit cost	$1299 (2012)[1]
Produced	1967 - present[2]
Variants	Standard, Varminter, Light Sporter, International, Tropical, Medium Sporter.
Specifications
Mass	7 pounds (3.2 kg)[1]
Length	36.5–42.5 inches (93–108 cm)[1]
Barrel length	20–28 inches (51–71 cm)[1]
Cartridge	Various (see article)
Action	Farquharson-style Hammerless falling block
Feed system	Single shot
Sights	none, or open sights

Sturm, Ruger No. 1 falling block action

A shotgun-style tang safety works on the hammer and sear. Available with an Alexander Henry, beavertail, or Mannlicher style forearm in a multitude of calibers.