Speargun Parts

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

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...

No-Slip Hogue GripsThe Hogue grip is a phenomenal upgrade for your speargun or AR Platform Rifle. It is rubberized to maximize comfort and help ab...

The Neptonics Speargun Reverse Trigger Mechanism is the most popular speargun trigger mechanism we offer. It has the durability of our other mech ...

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...

Our ELITE Slip Tip is our Flag Ship slip tip. Only a few make it through the ultra precise inspection process to qualify for the "Elite" Sliptip st...

Our Tuna Speargun Trigger Mechanism is awesome! The housing is still machined out of a solid stainless steel and fully-rounded ends make it a breez...

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...

The Ultra High Molecular Weight Enclosed Track helps support and guide spears as they fire out of your gun. The enclosed nature of the track reduce...

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...

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

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...

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...

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...

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

Here at Neptonics we stock a wide range of replacement parts for Riffe spearguns and reels. Riffe makes some amazing and quality spearguns, reels a...

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...

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

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...

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...

Pre-Made Roller Bands Made By NeptonicsOur pre-made roller bands are made to order with fresh band material. These are designed to fit into the Man...

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

Complete Teak Oil Kit for Treating Your Wooden SpeargunThe Neptonics Teak Oil Kit comes with 2oz of teak oil, two squares of sand paper (120 & ...

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...

Crimping Kit - 300 LB 200FT of 300lb mono 25 crimps Crimping tool

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...

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

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

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...

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

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

The Neptonics Pre-Cut Teak Speargun Blanks Kit is everything you need to build your custom speargun. Neptonics Speargun Blanks are made from Teak a...

200 FEET MONO 25 CRIMPS CRIMPING TOOL

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 is excited to offer the newly redesigned MannySub Roller Power Head Kit, coveted as the best roller muzzle in the world with an extensive...

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...

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

200 FEET MONO 25 CRIMPS Crimping tool

Spare rivet for spear shaft flopper Very easy to install, just tap the hollow end flat with a hammer after the pin is inserted

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

Rob Allen Muzzle Eye

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

Steve Alexander cast alloy handle is made from aircraft grade aluminum. Hard anodized Cast 356 alloy in ocean blue, brick red or black. some of its...

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...

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...

The Ulusub Speargun Handle has become very popular among speargun builders. The Ulusub handle features a high rake angle and a very comfortable fi...

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...

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

Features Retains slip-tip cable securely onto the gun Solid polymer plastic construction Comes with mounting screws