Paintball Barrel Sizes
Here are the most common types of aftermarket barrels with their respective sizes. These numbers come from numerous websites and resources from the manufacturers. Unfortunately, not all manufacturers will release their numbers. Click here for stock barrel sizes and paintball sizes.
| Model | Lengths | Step? | Advertised Bore | Measured Bore | Bore Description |
| DYE | |||||
| Standard, stainless | 10″, 12″, 14″ | N | .691 | .689 – .691 | Medium |
| Standard, aluminum | 10″, 12″, 14″ | N | .691 | .689 – .691 | Medium |
| BoomStick (Ironmen Series) | 14″, 16″, 18″ | Y | .688 | .688 – .689 | Small |
| LAPCO | |||||
| Autospirit, stainless | 11.5″ | N(a) | .687 | .687 | Small |
| Autospirit, aluminum | 11.5″ | N(a) | .686 | .686 | Small |
| Bigshot, stainless | 11.5″ | N(a) | .689 | .689 | Medium |
| Bigshot, aluminum | 11.5″ | N(a) | .689 | .689 | Medium |
| Bigshot Custom | 11.5″ | N(a) | .689 – .693 | N/A | Medium to large |
| Two-piece (coming this summer?) | N/A | Y | .687 (est.) | .687 (est.) | Small |
| Smart Parts | |||||
| All American, Aluminum, light gray back | 12″, (14″*), 16″ | Y | .685 | .684 – .686 | Small |
| All American, Aluminum, black back | 12″, (14″*), 16″ | Y | .689 | .689 – .691 | Medium |
| All American, Aluminum, dark gray back | 12″, (14″*), 16″ | Y | .692 | .69
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