Gun Building

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Koah Battle axe Butt
In stock
Out Stock

Do your shafts fall out of your Koah speargun or not hold like they used to? it’s probably because your speargun butt spare shaft holders are wallowed out. This is a genuine Koah replacement speargun butt. Simply remove rear screw,...

$30.95
Speargun Butt W/Spare shaft holders
In stock
Out Stock

This is a direct replacement for many custom guns with round butt ends with 1-1/8” stock. Fits most types of custom spearguns with round butt. The spare shaft holders get wallowed out over time and this butt will make them...

$34.95
Commercial Speargun Muzzle
In stock
Out Stock

This is the famed commercial muzzle used by Dan McMahon and it's the clear choice for nearly all of the most experienced commercial spearfisherman around.    Build and custom make your own speargun or modify an existing gun! Made of high quality...

$87.95
BANDS for spearguns
In stock
Out Stock

Don't be fooled by the cheap asian rubber that many companies try and sell! All of our rubber is super fresh, U.S. made,  premium quality Primeline Brand rubber! Our Speargun bands are typically made to order. This is important because...

$15.95
Line Anchor
In stock
Out Stock

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 muzzle bungee. If using a reel, it works like and eyelet for your reel line...

$14.95
Shark Fin Line Anchor
In stock
Out Stock

-Used in place of a rest tab that is added to a shaft - Helpful in long chest load guns with tight bands -Made from the highest grade of marine stainless steel- Comes with stainless steel mounting screws- Rock-solid line...

$14.95
Line Guide
In stock
Out Stock

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

$14.95
Neptonics Reverse Trigger Mechanism
In stock
Out Stock

The Neptonics Speargun Reverse Trigger Mechanism is the most popular speargun trigger mechanism we offer. It offers the added benefit of locking the spear shaft in at the back of the mech. This allows for an additional two inches of...

$74.95
ERMES Reverse Trigger Mechanism
In stock
Out Stock

The Ermes Double Roller Mech is by far the smoothest, strongest mechanism we have come across. It is made with a patented system, the operation consist of  two rollers, one works in contact with the trigger and is constrained to the...

$84.95
Line Anchor Loop
In stock
Out Stock

A necessary component for any custom speargun using a lineshaft. Mounted to the top of the gun, the line anchor loop is the attachment point for your snap swivel and the point where your mainline wraps around for stowage.

$12.95