H&R Topper Model 158 20 Gauge Single-Shot Shotgun, 28 Inch Barrel, Fixed Modified Choke, 3 Inch Chamber (Worcester, MA 1972 AJ Prefix)
This H&R Topper Model 158 is a straightforward, American-made 20 gauge single-shot from the early 1970s, identified as a 1972 Worcester production by its receiver markings and AJ serial prefix. It features a 28 inch plain, ribless steel barrel with a fixed modified choke and a 3 inch chamber, as stamped "20 GA. 3" MOD" on the barrel. The action is the classic H&R top-lever break-open with an exposed hammer and a single trigger.
Condition
Overall Condition: Fair condition, showing extensive signs of prior use and handling.
Bore Condition: Good - Clean, well-maintained, minor wear marks.
Specific Condition Notes: There are markings and rust present throughout from previous handling and use. The bore is bright and clean. Refer to the photos for a close look at surfaces and markings.
What’s Included
- Harrington & Richardson (H&R) Topper Model 158 20 gauge single-shot shotgun
The Topper 158 uses a single-shot break-action with a top-lever opener and an exposed hammer for direct, intuitive operation. Its capacity is one round. The receiver is steel and shows the visible cross-pins/rivets typical of this model, with "WORC. MASS. USA" marking linking it to H&R’s Worcester production.
The 28 inch, plain ribless steel barrel wears a small front bead and is stamped "20 GA. 3" MOD," confirming the 3 inch chamber and fixed modified choke. This setup is well-suited to standard 20 gauge field loads within the constraints of a modified choke.
Furniture is uncheckered hardwood with a semi-pistol grip and a matching fore-end retained by a screw. An H&R-logo ventilated rubber recoil pad with a white-line spacer is fitted, and the length of pull measures 14.0 inches.
Additional markings include a circled P on the barrel. The sights are a simple front bead only, consistent with the ribless barrel of this Topper series shotgun.