Gunbuilder

The Neptonics Pocket Plunge Bit is an essential router bit for any gun builder. Designed for cutting your trigger mech pocket and line anchor, we u...

Essential tool for cutting grooves for an enclosed track Oversized by .02" to allow for shaft clearance Hardened steel for smooth precise cuts Des...

Neptonics is your source for your spearfishing gear, and we are very proud to offer our 100% Synthetic Muzzle Bungees. Made from 100% Synthetic Rub...

Essential tool for cutting grooves for an enclosed track Oversized by .02" to allow for shaft clearance Hardened steel for smooth precise cuts Des...

Essential tool for cutting grooves for an enclosed track Oversized by .02" to allow for shaft clearance Hardened steel for smooth precise cuts Des...

Essential tool for cutting grooves for an enclosed track Oversized by .02" to allow for shaft clearance Hardened steel for smooth precise cuts Des...

The most powerful 16mm (5/8 in.) rubber available with 380% stretch Not harder to load, just snappier than any other rubber, giving your shaft mor...

Aussie Reels are made from high-quality nylon and have a great reputation. They are known worldwide for their smooth drag and durabilit...

The Neptonics Bungee Floatline is a Floatline and Bungee in One! Features a 1600lb continuous Spectra core running throughout the UV protected tubi...

Cable Replacement Kit & Crimp

Great composite handles to outfit your new speargun. It is extremely durable and has a strong grip made from a dense polymer composite, and it is c...

The disco ball flasher emits more light than any other flasher we have used. Our spearfishing disco flasher ball has more than 200 mirrors that be...

The Neptonics dovetail router bits are perfect for installing Neptonics UHMW Enclosed Tracks on customs wooden spearguns. Make sure that you use th...

The Neptonics dovetail router bits are perfect for installing Neptonics UHMW Enclosed Tracks on customs wooden spearguns. Make sure that you use th...

The Euro Roller Gun Rubber Anchor, is designed to replace your euro guns handle mounting screws and hook your roller rubbers to a fixed solid locat...

High-Quality GoPro Speargun Mounts The Neptonics GoPro Wooden Speargun Mount was designed to fit almost all wooden spearguns on the market. It can ...

The JBL Pacifica Reel is a quality, high capacity reel designed to handle the toughest reef fish out there. The simple design guarantees functional...

K.O. Reusable Powerheads are the perfect underwater protection device for any freediver or SCUBA diver. This is especially true when spearfishing i...

The Koah RSC 60M is exactly what the industry has been waiting for. Rock solid construction, rugged slide on base, balanced wheel design, soft gri...

Neptonics now offers a great selection of premium EURO speargun shafts, in stock and ready to ship! These shafts work with any type of euro mech. M...

The stainless steel spearfishing flopper from Neptonics is strong and low profile. The flopper is fast and convenient to install. The flopper fits ...

Purchasing rubber in bulk is a great way to save money and re-rig multiple guns We recommend changing speargun bands every 6 months to a year depe...

The AR-15 Speargun Rear Handle is constructed of high-grade marine aluminum. It is made in California by Neptonics. The kit includes everything yo...

The Neptonics Sniper Grip is a formed fitting right hand grip that is compatible to all Neptonics AR bases and AR platforms. Made in the USA from s...

AR Speargun Mid-Handle kit by Neptonics. The AR-15 Speargun handle offers the top attributes avid speargun builders are looking for. Simply cut yo...

Neptonics is proud to offer this new AR-15 Speargun Handle with a fully interchangeable pistol grip. This is our version of the military spec spear...

Neptonics Beverage Wetsuit! A sick ass way to keep your favorite beverage icy cold!

Spearfisherman and Fish the world over respect the quality and strength of the Neptonics Bluewater Pro Floatline. The 100% Spectra Core gives this ...

We are proud to offer and manufacture the Neptonics Spearfishing Bungee. It’s made with the same quality craftsmanship and detailed construction t...

The Neptonics Bolt On Tuna Clip is compatible with all AR base handles for you speargun. The tuna clip will come out of the AR grip and makes an ea...

The Neptonics Catch All Tote comes in two sizes. Made of PVC mesh. It Has double reinforced straps and bottom. These bags are perfect for carrying ...

Neptonics cinch knot cord has an aggressive braid that grips itself and never slips. It is the best material we have found for tying bands. With th...

The Neptonics Coalescence Pro Floatline is a Floatline and Bungee in One! It features a 1600 lb continuous Spectra core running throughout the UV-p...

Neptonic Systems is proud to offer the Deluxe Hand Crimper as part of our Crimping Kit. This crimper is ideal for crimping mono and stainless steel...

We make your power bands the same day you order them so they are always fresh. All speargun bands are made to order specifically to your specificat...

The Neptonics Deluxe Travel Speargun Case is an essential when globetrotting to your dive destination! Designed for guns that break down for travel...

The Neptonics Double Roller Head is the same head we use to make our Double Rollers. Stainless Steel Frame 4 Rollers Works perfectly with 9/16 and...

Have you ever been in a situation where you wish you have more than one shot? The Neptonics Double Trigger Mechanism lets you have two shots and fi...

Neptonics Easy Reach Loader is a wrist load assist to help load long roller guns.Simply attach the small hook on the wishbone and use the strength ...

Features Works great on any mid-handle speargun build Made from the highest grade of solid stainless steel Trigger offers notched grooves that prov...

The Neptonics Speargun Epoxy Kit is specially formulated for laminating speargun woods and clear-coat finish on spearguns. This epoxy is ultra clar...

The Neptonics Wide Mouth Euro Trigger Mech is machined out of solid stainless steel and features strong, durable internal components. Like all of ...

All Neptonics speargun parts are built in California by us. This is important because we control the quality every step of the way. Engineering, M...

The Neptonics Fish Scaler is made from 316ss. If you like cooking whole fish this is a must have. Makes quick work of scaling your catch.

Neptonics presents an innovative, smart breakaway adapter for your floatlines. This breakaway adapter contains 1400lb, fully braided Spectra core t...

Most likely the most notable advancement in spearfishing gear this century, the floatline clutch from Neptonics is an amazing piece of equipme...

Our foam-filled floatline is superstrong, durable, and reasonably priced. The foam core offers additional buoyancy and the high-visibility orange ...

Celebrate your love for spearfishing this Love Of Spearfishing Shirt!

Neptonics Inset Line Guide is designed to be installed beside the track. This works best on open track roller guns where the risers extend to the f...

Super Simple Speargun Line Anchor. Quick Install 100% Marine Grade Stainless Steel. Screws Included

The Neptonics Jacketed Dyneema Line is the best line out there for reels or shooting line. This line is stiff enough to line easily onto a spear sh...

Neptonics line anchors are used to wrap and hold your shooting line against your speargun and provide an anchor point for your shooting line and mu...

Wraps the shooting line over the shaft holding it to the gun Stainless steel construction Comes with stainless steel screws

The Neptonics Line Keeper Pouch is the perfect solution for managing your rigged speargun shaft. It ensures that the shooting line stays compact an...

Stainless Steel Line Release with a set screw and a pin retainer Works with Neptonics Reef and Tuna Trigger Mechs

Stainless Steel Line Release with a set screw and a pin retainer Works with Neptonics Reef and Tuna Trigger Mechs

The Neptonics Load Assist is a must have accessory for loading roller guns, long spearguns, or for spearfishers with shoulder injuries. It lets you...

Pigtail swivels / corkscrew swivels are great for clipping your shooting line to your spearguns. They work well on your speargun reel line. Swivels...

Pigtail swivels / corkscrew swivels are great for clipping your shooting line to your spearguns. They work well on your speargun reel line. Swive...

Neptonics Pinch Weight Mold for the do it yourself diver. This mold produces two lead weights with each pour. Each weight is 2lbs. Clam shell mold ...

The Neptonics Speargun Rubber Kit has everything you need to make your own rubber speargun bands. This is a great kit to keep in your dive bag. Our...

Powerheads are a very controversial subject in the spearfishing community. We do not condone hunting with powerheads, however, we do condone protec...

The Neptonics Pro Pole Spear Case is fundamental for safekeeping your broken down pole! Holds (2) pole spears, including the Headhunter Nomad, the ...

The Neptonics mid-handle push rod is an essential component every mid-handle speargun. The push rod connects the remote trigger to the trigger mech...

The Neptonics push rod retainer is an essential component for every mid-handle speargun. The push rod retainer holds the push rod in place that con...

Take the Neptonics Microfiber Towels anywhere – Diving, pool training, camping, backpacking, in the field, or to the beach. As an essential piece o...

The Neptonics Quantum Steatlh Sun Shield, is made from 2 way poly stretch fabric that is moisture wicking, machine washable, and UPF 30 fabric. Thi...

Some divers prefer to have a safety mechanism on their guns. For those divers, we have developed the Reef Mech Safety Kit. This safety kit works wi...

The Neptonics Reef Speargun Trigger Mechanism is the most tried-and-true mech on the market. Made out of 100% stainless steel in our California wo...

Used on mid-handle guns to activate your rear-trigger mechanism Both remote triggers are made of high-quality 316 stainless steel Available in sta...

Our Roller Kit can be mounted flush on your speargun. The Double Roller Stainless Steel bracket has two 1/4" pins that anchors into your wood spear...

These Rollers are the ones we use for our spearguns. They are very strong, made from Delrin. The standard has no bearings, and are made in two size...

Neptonics Stainless Steel Shackles are avilable in two sizes. Long 1.6in with captive pin and short without captive pin. These are a must have for ...

Made from the highest grade of marine stainless steel Comes with stainless steel mounting screws Rock-solid line anchor

The Shark Tooth Bottle Opener allows you to pop open your favorite beverage in style. The shark tooth silhouette comes from the the Mako Shark too...

Slide rings are an essential component in a slip-tip setup Serves as the anchor point for the slip-tip spectra or wire Made of solid stainless ste...

The Neptonics Solar Hoodies with UPF 50 sun protection are the ultimate in boat attire. The microfiber performance polyester is light weight yet d...

Here at Neptonics we pride ourselves in having a wide variety of different spearfishing rubber available for any of your spearfishing needs. We hav...

The Neptonics Speargun Butt is made from injection molded synthetic rubber. It's diameter is 1.25 inches which provides a very stable loading platf...

Neptonic Systems now offers a great selection of premium speargun shafts, in stock and ready to ship! These shafts work with any type of American m...

Spectra is a super strong Polyethylene fiber that offers maximum strength and minimal weight Spectra floats on water and is extremely durable Extr...