CUSTOM TANK BLOCK for Crosman 2240, 2250, 2260, 2300KT, 2400KT & custom builds

Description

This listing complies with eBay's air gun guidelines found here and I will only sell and ship air guns to buyers in jurisdictions where permitted by applicable laws - http://pages.ebay.com/help/policies/firearms-weapons-knives.html
We also have shortened 10" Discovery tubes listed with this tank block installed. That fits Discovery, Maximus, 2250, 2400KT and 2260. Rifle stocks need to be cut shorter to fit with the tank block as shown in the photos above.
This is the Magnum Tank Adapter in black anodized 6061-T aluminum. It mounts tanks up to 4.5" OD. This is the strongest, safest design in the industry. It threads directly into 7/8" OD tubes including 2240, 2250, 2260, 2300 series, 2400KT, Discovery, Challenger, Maximus, Fortitude, 1701P, 1720T and Marauder Pistol. A 1" diameter shroud or muzzle brake has about 1/8" clearance with a 4.5" OD tank. The carbines in the photos have 14.6" barrels and shortened 10" Discovery tubes. The larger tanks are 4.25" OD, 50 cu in carbon-fiber. The smaller tank is 2" OD, 13 cu in aluminum.
The adapter has an anchor screw on the left side to lock it in a fixed position. The screw is T10 drive with a head diameter of .271". The hole should be .275" - .281" (9/32) to fit in a recessed fashion like PCP valve screws do.
You can either drill the anchor screw hole in the tube as described or install it until the o-ring is past the threads, then apply threadlocker to the threads and install it the rest of the way. It will thread past the point where it's straight so you thread it all the way until it touches the tube, then back it off a partial turn until it's straight. If the anchor screw is in the correct location it will be straight with the screw lined up with the hole. With threadlocker you get it straight with the tube lying on it's side until the threadlocker sets.
MARKING THE ANCHOR-SCREW HOLE LOCATION:
Thread the adapter all the way in. Back it out until it points straight down. Mark the center of the hole 1" from the back of the block. Deburr the inner edge of the hole after drilling so the o-ring on the adapter doesn't get damaged during installation. You may have to push the o-ring under the edge of the hole with a small slotted screwdriver to help it go past without being cut.
This adapter can handle operating pressures far above the limits of your gun. The limit your gun can handle depends on how many valve screws you have and how strong they are. With three of our custom valve screws 3000-3200 PSI is a safe operating pressure limit. Maximus models with two custom screws can use up to 2400 PSI. For CO2 models you need to convert your valve to bulk-fill with our Magnum Valve for bulk-fill conversions. That's safe for CO2 and HPA tanks regulated up to 1400 PSI using a 1.8K burst disc on the regulator.
This listing is for one tank block with the o-ring and anchor screw, other parts and airguns are shown for reference only.