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LAPCO Spyder vertical adapter

© Ravi Chopra, 1999

LAPCO Spyder vertical ASA

One of the stock Spyder’s big deficiencies is the lack of a vertical ASA. Let’s face it, these aren’t the good old pump days any more. People want a vertical mount in which to install their favorite expansion chamber, regulator, or just a gas-through forgrip. Given the Spyder’s tremendous popularity and the huge (and growing every day) list of aftermarket parts, a vertical mount has just about become a mandatory upgrade. Many are currently available, most of which are ones that were originally designed for the Minicocker and which fit the Spyder’s front gas inlet quite nicely. LAPCO bucked the trend by designing a vertical ASA specifically for the Spyder.


To understand why the LAPCO ASA was designed the way it was, you need to know how most vertical ASAs for the Spyder are made. Most are simply an ASA with a threaded tube similar to the end of a steel braided hose sticking out the top. These are screwed into the inlet hole in the bottom-front of the Spyder body where the stock hose normally attaches. The result is that you only have a small threaded tube connecting your vertical and whatever may be screwed into it to the ’gun. If you drop your paintgun or fall on it, whatever is in the ASA acts as a nice big lever arm, transmitting all of that twisting and bending force to the small threaded tube. Not a whole lot has to break to shear the thing clear off the ’gun. Furthermore, it can unscrew from the ’gun body just as easily as it screws in. If you run your CO2 tank in the vertical, repeatedly installing and removing tanks can slowly work the threads out.

LAPCO came up with a somewhat more complex design that nicely dodges the problem of having only a small threaded tube as the only contact point between the vertical ASA and the paintgun body. The ASA is made in two pieces. The main ASA body is actually curved to snug right up against the curved bottom of the ’gun body, providing a large area of surface contact between the ASA and the ’gun. The ASA is held in place with a large, hollow brass screw that goes up through the inside of the ASA and into the same hole that the stock hose threads into. An o-ring seals the screw inside the ASA and a little loc-tite or teflon tape helps seal around the screw’s threads in the ’gun body. This is a much sturdier way to attach vertical-mount items to your Spyder. Whether you use a small, light external regulator to a big beefy 20 oz tank in your vertical, the LAPCO vertical will hold it much more safely due to the larger contact area. Furthermore, since the ASA is form-fitted to the curved ’gun body, it can’t rotate around and start unscrewing from the ’gun. The only disadvantage is that it does not have a nub to depress a pin valve. If you want to run a tank in this vertical, you’ll need an on/off tank with no pin valve.

Finally, the LAPCO vertical looks very nice. It is tapered at the top, curved to fit the ’gun body, and is cut in an arc to fit over the end of the trigger frame. As such, it looks like it was designed as an integral part of the original ’gun rather than a tacked on, unmatched aftermarket piece.

Design rating [4]


It’s a vertical ASA. It works. What more is there to say? The only disadvantage is the inability to use pin-valve tanks. On/off tanks and all other vertical-mount accessories that fit ASAs will work perfectly well with the LAPCO ASA.

Performance rating [3]


The LAPCO vertical ASA for the Spyder sells for $17.50 on average. This is actually a bit less than other vertical ASAs for the Spyder. Given that it is quite a bit more complex than competing parts, this is an exceptionally good price.

Price/Warranty rating [4]


From a simple safety standpoint, the LAPCO Spyder vertical ASA stands head-and-shoulders above the competition. In addition, it looks great and comes at an unbeatable price. What more could you ask for?

All material at this site is © Ravi Chopra, 1999