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JBL Magnum 450 Triple Sling Spear Gun (4D50)

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About JBL Magnum 450 Triple Sling Spear Gun (4D50)

The spear gun design that started it all, the JBL Magnum series of guns is probably responsible for more speared fish than all other spear guns combined. It's no wonder; as this durable and accurate workhorse features a 1 1/4" (3.2 cm) drawn alloy barrel, corrosion resistant hardened stainless steel trigger, shaft and point. The JBL756S shaft is made from 17-4 spring stainless for durability and long life shaft is 56" (142.2 cm) in length with a 3/8" (9.5 mm) diameter. The Handles are constructed of two-piece cast aluminum providing strength and ease of maintenance. The Guns overall length is 68" (172.7 cm).

The Magnum 450 features three 30" x 9/16" (762 mm x 14 mm) Hi-Mod JBL230 bands with 302 stainless wire wishbones. Tried and trusted, this is one hunting buddy you'll be glad to share a secret spot with. These guns are most suitable for spear fishing among reefs and rocks where heavy penetration is needed. The Magnum 450 is designed for long range and heavy penetration where range is important and heavy penetration is required. The combination of shaft length and the 9" (23 cm) long butt extension make the gun easier to load.

The JBL823 tip is designed for large powerful fish. JBL's breakaway point has 4"(10.2 cm) wings and 3" (7.6 cm) slip-tip configuration. The Tip is hardened 17-4 stainless and features a multi-braid stainless cable in 1/16" (2 mm) diameter. These tips hang on no matter how hard the fight while minimizing damage to your spear shaft. Their low-profile, double barbed design allows for pinpoint accuracy and dependable deployment. Don't trust a once in a lifetime fish to anything else. The Gun is equipped with the JBL518 Shock Line. Sometimes we miss or we shoot a large fish and the recoil can pull the gun out of your grip, whichever the shock line will keep you in control. The Guns range is 27' (8.23 meters). The Gun is positively buoyant and is totally made in the USA.

The JBL Magnum 450 Triple Sling Spear Gun (4D50) is commonly used for Close To Shore, Cold Water, Large Prey, Open Water, Small Prey, Warm Water and more. The JBL Magnum 450 Triple Sling Spear Gun (4D50) is most used by customers who consider themselves to be a Advanced Diver, Beginner, Recreational Diver among others. The JBL Magnum 450 Triple Sling Spear Gun (4D50) is popular because customers like the following qualities of the JBL Magnum 450 Triple Sling Spear Gun (4D50): Accurate, Durable, Fast, Good Range, Lightweight, Low Recoil.

Warranty Information

This product has a limited warranty of 12 months.


JBL Magnum 450 Triple Sling Spear Gun (4D50) Features

  • JBL Magnum 450 Triple Sling Spear Gun (4D50):
  • The Spear Gun Design that Started-It-All!
  • Probably Responsible for More Speared Fish than All Other Spear Guns Combined
  • Durable and Accurate Workhorse
  • 1-1/4" (3.2 cm) Drawn Aluminum Alloy Barrel
  • Corrosion Resistant Hardened Stainless Steel Trigger
  • Handle: 2-Piece Cast Aluminum, Provides Strength and Ease of Maintenance
  • Hardened 17-4 Spring Stainless Steel Shafts:
    56" x 3/8" (142.2 cm x 9.5 mm) Shaft
    Corrosion Resistant 17-4 (spring) Stainless
    Hand-Tuned for Alignment then Heat-Treated for Maximum Hardness
    Reduce-Flex and Provide Optimum Energy Transfer
    6mm Threaded End
  • Slings:
    Unique Latex Formula
    302 Stainless Steel Wishbone
    Special Anti-Oxidants Protect from UV
    Durable Long Life Design
    Three Nitro 30" x 9/16" (762 mm x 14 mm) Slings
  • JBL Break-Away Bullet-Nose (Tri-Cut) Spear Point:
    4" (102 mm) Wingspan
    For Medium to Large Fish
    17-4 Hardened Spring Stainless Steel Point
    Maintains Excellent Cutting Edge for Penetration Power
    Standard 3/8" (9.5 mm) Profile Opens Larger Hole for Easy Passage of Barbs Thru-Fish
  • Suitable for Shooting Among Reefs & Rocks
  • Great when Heavy Penetration is Needed
  • JBL515 Shock Line
  • Gun Overall Length: 68" (172.7 cm)
  • Reach: 27' (8.23 meters)
  • Floatation: Positively Buoyant
  • Tried & Trusted, One Hunting Buddy You'll Share a Secret Spot With

JBL Magnum 450 Triple Sling Spear Gun (4D50) Customer Reviews Powered by TurnTo®

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Not for the Novice


After reading several reviews I've decided to make my own for those of you that are newer to Diving. This is a more advanced gun. Shooting smaller prey this gun isn't needed, nor would I recommend, this is a large gun for large prey! Due to a closed muzzle you must be AT LEAST the length of your shaft to your target if not longer if you wish to keep your shaft in good condition and not bent, or destroy the front end of this gun. Below I've bullet listed some pro's and Cons of this purchase for those who don't want to read a novel. Pro(S) -Accurate -Powerful -Out of the box great price for what it is. Con(S) -Closed muzzle -Butt Stock easy to lose if your float line free diving, I lost mine after the first fish. Regarding others negative comments, people listed hard to use; well it's 5'-8" long it's a large gun, your going for large fish, not beginner fish. If your finding it hard to load it's possibly your technique not the gun! Some say this gun is bulky, well big fish take bigger guns! For those of you that are looking for a 'quiet' gun get a Pneumatic gun they are quiet and fast to reload. a long range gun like this can and does require more than one(1) wrap of your shooting line. With a few easy modifications this gun is a steal!

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Questions & Answers Powered by TurnTo®

Questions about this item:

paul c  Great q&a ! But i was wondering if anyone knows the fps of the 450 magnum? Thanks and happy fishing
GARRETT J  FPS is that feet per second?
paul c  Yeah you bet... just trying to find out the velocity or feet per second if anyone knows roughly what it is
Shopper  If i were to add a reel to this gun which should i be looking at?
GENNARO D  the reel u want is an Omer. Mako makes a decent reel and so does Mares. but Omer is a good dependable one. cant go wrong
GENNARO D  reels are great if ur shooting big fish...30 plus pound stripers or blues. but small fish...forget it. dont need it. back in the day they just had the shock cord n nothing else. reels are great for the bigger fish. im usually shooting big stripers so i need it.
JOHN P  The one specifically for your gun. It already has the slot that fits your gun. just look it up by Cressi Geronimo 2
Frank L  Currently, we have no reels that would attach to this gun without modification.
Shopper  How long is the gun?
LeisurePro S  This gun has a total length of 68 inches and a shaft length of 56 inches.
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