# JBL Magnum 51" Competition Magnum: specs and price

**Price (US):** $405 at jblspearguns.com (51" Competition Magnum variant; JBL sells five lengths (37"-63") from $380-$420), as of 2026-08-11. A sourced, dated price of record — other retailers (incl. Amazon) may be lower. Among the 11 spearguns we track it is #8 cheapest of 11; category median $299.95.
**Brand:** JBL

## Specifications

| Spec | Value |
| --- | --- |
| Price (US) | $405 |
| Brand | JBL |
| Barrel length | 51 in (129.5 cm) |
| Power type | band |
| Bands | 2x 5/8 in (16mm) Nitro Bands with COMPOUND X |
| Shaft diameter (mm) | 7.9 |
| Barrel material | aluminum (1 1/8 in aircraft-grade) |
| Effective range (ft) | — |
| Reel ready | Yes |
| Buoyancy | floats without spearshaft loaded (integrated barrel float chamber) |

## Where it stands

At $405, the JBL Magnum 51" Competition Magnum is #8 cheapest of the 11 spearguns we track, where the median is $299.95. On the spec sheet, its shaft diameter of 7.9 mm is above the median of the 11.

## Frequently asked questions

**How much does the JBL Magnum 51" Competition Magnum cost?**

The JBL Magnum 51" Competition Magnum has a US price of $405 (51" Competition Magnum variant; JBL sells five lengths (37"-63") from $380-$420), as of 2026-08-11.

**How does the JBL Magnum 51" Competition Magnum compare on price?**

At $405, the JBL Magnum 51" Competition Magnum is #8 cheapest of the 11 spearguns we track, where the median is $299.95.

**What are the JBL Magnum 51" Competition Magnum's key specs?**

JBL Magnum 51" Competition Magnum (JBL): barrel length 51 in (129.5 cm), power type band, bands 2x 5/8 in (16mm) Nitro Bands with COMPOUND X, shaft diameter mm 7.9, barrel material aluminum (1 1/8 in aircraft-grade). Full sourced spec sheet verified 2026-08-11.

Source: https://jblspearguns.com/products/magnum-spearguns (jblspearguns.com, accessed 2026-08-11)
Canonical: https://frontdeskreview.com/product/spearguns/jbl-magnum-51/
Cite: Per The Front Desk Review, the JBL Magnum 51" Competition Magnum price of record was $405 as of 2026-08-11 — https://frontdeskreview.com/product/spearguns/jbl-magnum-51/
License: CC BY 4.0. Price history: https://frontdeskreview.com/data/price-history.jsonl