H&R Ultra Slug 20 Gauge Single-Shot Rifled Shotgun, 24 inch Heavy Barrel, 3 inch Chamber, Mounted Scope
The Harrington & Richardson Ultra Slug in 20 gauge is a dedicated slug gun built around a 24 inch heavy rifled barrel and a simple, reliable single-shot break-action. It features a 3 inch chamber, an exposed hammer, and a hardwood stock with a ventilated recoil pad. This example includes a mounted scope on a base with Weaver rings, has no iron sights, and is marked Made in Gardner, MA on the receiver.
Condition
Overall Condition: Good condition, showing some signs of prior use and handling.
Bore Overall Condition: Good - Clean, well-maintained, minor wear marks.
Bore Rifling: Good Rifling - Intact, well-defined lands and grooves.
Specific Condition Notes: This firearm is in solid functional shape. There are scratches and blemishes on the exterior surfaces. Pitting is present on the barrel finish. The scope's objective lens has a sizable damaged spot.
What's Included
- Scope (mounted)
- Weaver scope rings (installed)
- Scope base (installed)
- Sling swivels (installed)
The 24 inch heavy rifled barrel is purpose-built for slugs and is clearly roll-marked "ULTRA SLUG 20 GA. 3 inch RIFLED BORE." The rifling is well-defined, and the 3 inch chamber provides flexibility with modern 20 gauge slug loads.
The action is a single-shot, break-action design with an exposed hammer and a top-opening latch that uses a knurled thumbpiece for positive operation. Capacity is 1 round. There are no iron sights; a scope is mounted on a base with Weaver rings.
Furniture includes a glossy stained hardwood buttstock with a ventilated recoil pad and a slim hardwood fore-end. Sling swivel studs are installed, and sling swivels are included. Length of pull measures 14.0 inches.
Finish and markings are consistent with the Ultra Slug series: a dark blued barrel paired with a matte parkerized receiver. The receiver is marked "Manufactured in Gardner, MA U.S.A." and the rifle-bored 20 gauge barrel carries the Ultra Slug markings.




