The Front Desk Review

JBL · Updated August 2026

JBL Magnum 51" Competition Magnum: price & specs

JBL Magnum 51" Competition Magnum. Every price and spec below is linked to its source and dated — no guesses.

Source: jblspearguns.com verified verify in ledger

On the Recordsourced & dated · eligible
See JBL Magnum 51" Competition Magnum on Amazon Live price at the store — may differ from the dated listed price above. As an Amazon Associate we earn from qualifying purchases.

Is the JBL Magnum 51" Competition Magnum a good buy?

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.

Specifications

Price (US)$405 51" Competition Magnum variant; JBL sells five lengths (37"-63") from $380-$420
BrandJBL
Released—
Barrel length51 in (129.5 cm)
Power typeband
Bands2x 5/8 in (16mm) Nitro Bands with COMPOUND X
Shaft diameter (mm)7.9
Barrel materialaluminum (1 1/8 in aircraft-grade)
Effective range (ft)—
Reel readyYes
Buoyancyfloats without spearshaft loaded (integrated barrel float chamber)

Source: jblspearguns.com (verified 2026-08-11). JBL's official Magnum Spearguns page (rebuilt on the Reaper platform, distinct from the wood Woody Elite "Magnum" length option) documents a 1 1/8 in aircraft-grade aluminum barrel, 5/16 in (7.9mm) heat-treated stainless shaft with 6mm threads and triple-notch Add-A-Band design, dual 5/8 in Nitro Bands, an integrated reel/accessory mount, and an integrated float chamber for buoyancy without the shaft. Five lengths (37"-63") are priced $380-$420; the 51" Competition Magnum was chosen as the mid-size representative.

Is the JBL Magnum 51" Competition Magnum worth it vs cheaper spearguns?

JBL Magnum 51" Competition Magnum against its closest cheaper and pricier spearguns on the specs that matter — every value sourced. See all 11 ranked

ProductPriceBarrel lengthPower typeBandsShaft diameter (mm)Barrel material
JBL Magnum 51" Competition Magnum this$40551 in (129.5 cm)band2x 5/8 in (16mm) Nitro Bands with COMPOUND X7.9aluminum (1 1/8 in aircraft-grade)
HammerHead Evolution² 55cm$328.9955 cm (21.7 in)band2x Power Helix bands with Dyneema-coated nylon wishbones/bridles (diameter not published)—aluminum (aircraft-grade anodized, integrated shaft guide)
JBL Woody Elite 44" Sawed-Off$51044 in (111.8 cm)band2x 5/8 in (16mm) Elite Nitro Bands, expandable to 3—wood (solid African mahogany, CNC machined)

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.

Price of record: $405 at jblspearguns.com, 2026-08-11. Other retailers may be lower — check the current price:

See JBL Magnum 51" Competition Magnum on Amazon As an Amazon Associate we earn from qualifying purchases.

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