| Term | Definition | Category |
| H&K | Heckler & Koch | Brand |
| H&R | Harrington & Richardson | Brand |
| HB | Hi-Brass | Ammunition |
| HB | High-Brass | Ammunition |
| HB | Heavy Barrel | Item Description |
| HDF | Honor Defense | Brand |
| HE | Hawkeye | Item Description |
| HEN | Henry Repeating Arms | Brand |
| HER | Heritage Manufacturing Inc. | Brand |
| HG | Hogue Rubber Grip | Grip |
| HG | Black Hogue Overmolded Stock | Item Description |
| HGRP | Holster Grip, Unfolds & Locks to Become Handle | Grip |
| HLST | Holster | Accessory |
| HMD | Half Mil-Dot | Accessory |
| HNDGN | Expert | Magazine |
| HNR | Hunter | Item Description |
| HNR | Hornady | Ammunition, Brand |
| HNTR | Hunter | Item Description |
| HOGRP | Hog Reaper Pattern | Finish |
| HOGRPR | Hog Reaper Pattern | Finish |
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