Ruger Mark IV Standard

Name: Ruger Mark IV Standard
Brand: Ruger

Ruger lists the Mark IV Standard as a .22 LR rimfire pistol with a 4.75 in tapered barrel, a blued alloy steel construction on an aluminium grip frame, fixed front and rear sights, one-button takedown and a 10-round magazine.

Record / ruger-mark-iv

Mark IV Standard

Ruger · Mark IV

Source verified

Scope note: Model 40104, the 4.75 in blued Standard, read from the JSON object Ruger embeds in its model page — the cleanest source in the project, and the reason execution/extract_ruger_specs.py exists. THE PAGE MARKETS TWO MODELS AND EMBEDS A SPEC OBJECT FOR ONE. Model 40105 is the same Standard with a 6 in barrel, shown on the same page at the same $579 MSRP, and Ruger publishes no specification object for it, so its dimensions are not available here and it is a separate listing under the base-model rule. The extractor now warns when a page displays catalogue numbers it has no spec object for, because "1 catalogue entry" otherwise reads as "Ruger lists one model here" — which is false, and which would scope a record to the wrong catalogue silently. The wider Mark IV family — Target, Hunter, Competition, Tactical, the 22/45 and 22/45 Lite — are separate product keys entirely. THE SLIDE FINISH IS DELIBERATELY UNSET AND THE REASON IS RUGER'S OWN DATA MODEL. Ruger's JSON carries BOTH a firearm-level `finish` and a slide-specific `slide_finish`; here `finish` is "Blued" and `slide_finish` is EMPTY. Recording Blued as a slide finish would fill a slide-specific field from a firearm-level one while the maker's own slide field sits blank — and this pistol has an internal cylindrical bolt rather than a conventional slide, which the page describes. Contrast the RXM, whose `slide_finish` Ruger does populate ("Black FNC Nitride") and whose record sets the field on that basis: the two Ruger records differ because Ruger's data differs, not because the rule changed. Year introduced is Ruger's own `introDate` of 2017-09-05, the same field the RXM record uses, so it is footnoted to the product page rather than to a launch release. Ignition, trigger action and operating system are all unset, as on the RXM: Ruger's `action` field reads "Rimfire", which is a cartridge class rather than any of the three axes, and the page never describes the mechanism. NOTE ONE SUBSTRING TRAP THIS PAGE SETS: the word "hammer" appears once, in "cold hammer-forged barrel" — a manufacturing process, not an ignition mechanism, and not a citation for anything. Warranty is unrecorded, following the RXM: Ruger's customer-service pages carry no warranty statement, and this page contains no occurrence of the word. Height and weight carry basis notes because Ruger does not say whether either includes a magazine. Ruger publishes imperial only, so every metric value here is converted and flagged. Also published and unrecorded for want of a schema field: a 1:16 twist with 6 grooves, an alloy steel construction with an aluminium grip frame, checkered synthetic grips, a tapered barrel, an internal lock, UPC 7-36676-40104-8, and the $579.00 MSRP. Ruger's data also carries an explicit `discontinued` flag, which reads 0 for this model — the one maker here that states production status outright, though the directory records no such field.

Reference fields

Manufacturer	Ruger^[1]
Manufacturer series	Mark IV
Firearm category	Handgun^[1]
Chambering	.22 LR^[1]
Manufacturer chambering	22 LR^[1]
Generation	Not yet verified
Directory frame class	Not yet verified
Manufacturer listing	Listed on Ruger as model 40104, catalogue name STANDARD^[1]
Year introduced	2017^[1]
Manufacturer action label	Not yet verified
Overall dimensions	≈228.6 × 30.5 × 137.2 mm / 9 × 1.2 × 5.4 in (height: magazine state not stated by Ruger)^[1]
Barrel length	≈120.6 mm / 4.75 in^[1]
Weight (unloaded)	≈799 g / 28.2 oz (magazine state not stated by Ruger)^[1]
Magazine capacity	Standard: 10; no optional capacities listed by the source^[1]
Trigger pull	Not yet verified
Slide finish	Not yet verified
Controls	Fixed front and rear sights; one-button takedown releasing the barrel-receiver assembly without tools; checkered synthetic grip panels on a one-piece CNC-machined aluminium grip frame; ergonomic bolt stop; internal lock^[1]
Warranty	Not yet verified
MSRP	Not recorded

Verification boundary: Published technical data are rounded, may not reflect manufacturing tolerances, and may change without notice. MSRP is not recorded: most cited product pages do publish a price, but it changes without notice and independently of the specification, so this directory has no field for it and the row stays blank rather than carrying a figure that would silently go stale. Values marked ≈ were converted by this directory from the unit system the source published; the unmarked figure in the same row is the published one.

Evidence tiers backing this record: Manufacturer. Unmarked values come from manufacturer documentation; any value drawn from a lower tier is labeled inline with that tier. Where two sources disagreed, the higher tier was recorded and the disagreement noted.

Sources

[1]
Ruger Mark IV Standard — model 40104 specificationsManufacturer Manufacturer product page
Accessed 2026-08-12