Updated October 12, 2017


Clamp collars are listed that fit 7/16" barrels and 22XX valves. They grip tight and even without damaging the surface they are clamped to. 

 The 7/16" collar fits standard Crosman 7/16" barrels. It can be used as a cutting guide for shortening barrel length or one or mare can be used as weights to reduce muzzle lift.

The 3/4" collar fits 22XX CO2, Discovery, Maximus, Marauder Pistol and similar valves. I use these on valves that are difficult to get together or apart due to harder o-rings or threadlocker. I do not recommend using threadlocker on valves. It's sometimes on CO2 valves from the factory but not always. 


I'm finally started filming instructional videos I intended to produce last year. I'm in the middle of one on complete tear-down and rebuild of Discovery and Maximus. I'll be covering custom tubes, fill adapters, trigger groups and all other custom parts for those models. After that will be one on the Magnum Tank Adapter, custom PCP tubes, 22XX and 13XX.


I'm putting some custom guns together as I have time to do so. I plan to list some 1377, 1322, 2240, 2250, 2260, Discovery, Maximus and tank-fed customs. There will also be some custom PCP rifles and pistols. These will be listed as each is completed over the rest of this year. The prices 

will range from $200 - $1000.


 The new MAGNUM VALVE for DISCOVERY & BULK-FILL 22XX is in stock. It's a new design that blends the Discovery & Marauder valves together with a large angled port. It can produce 50-70 FPE in Discovery rifles if combined with a wide-bore gauge port or you use the gauge bypass version. My custom valve screws and an operating pressure of 3000-3200 PSI is also required to get above 50 FPE. To reach 60+ FPE a 26" Maximus barrel is necessary, 24" won't quite get there without further mods and it's much less efficienct. CLICK HERE to view the listing with more info.


There's a new DRILLING TUBE HOLES page in the TECHNICAL INFO link of the navigation bar above. I somehow manged to loose the LUBRICATION page in the process, will try to fix that as soon as I have time. In other words, not likely soon.


MAGNUM AIRPOWER LLC is a registered trademark. Claim is made to the exclusive right to use AIRPOWER apart from the mark.

You must be 18 years or older to purchase guns and parts.

All parts and guns are well packaged and safe delivery is guaranteed. If there are any problems on our part or due to the carrier we will take responsibility and correct the issue as quickly as possible. All shipments will include tracking.

Returns will be accepted so long as the circumstances are reasonable. We reserve the right to determine what is reasonable. To request a return use the email address on the CONTACT page. The buyer pays return shipping and the original shipping cost will be deducted from your refund. Items must be returned in the same condition they were received or additional deductions may be withheld.

Some state and local governments have laws restricting the sale, carrying and/or use of airguns. By law no state or local government can prohibit the sale of airguns but other restrictions may be imposed. It is your responsibility to abide by the laws in your area. If you buy a gun or the parts to build one and then find it is restricted or unlawful that is YOUR problem. We will ship parts to any location in the US and all US territories. We reserve the right to refuse shipping of complete guns to specific locations.

The following summary contains sections of federal law that pertain to the sale of airguns. It explains that traditional pellet guns, BB guns and paintball guns are not considered to be replica, imitation or look-alike firearms. They are not required to have markings indicating so and no state or local government can require them or prohibit the sale of these guns. This law starts out by specifying that toy guns, which includes airsoft, are required to have special markings. We left those sections out because we don't sell toy guns.

15 U.S.C. 
United States Code,  2010 Edition
Sec. 5001 - Penalties for entering into commerce of imitation firearms

(a) Acts prohibited

It shall be unlawful for any person to manufacture, enter into commerce, ship, transport, or receive any toy, look-alike, or imitation firearm unless such firearm contains, or has affixed to it, a marking approved by the Secretary of Commerce, as provided in subsection (b) of this section.

​(c) “Look-alike firearm” defined

For purposes of this section, the term “look-alike firearm” means any imitation of any original firearm which was manufactured, designed, and produced since 1898, including and limited to toy guns, water guns, replica nonguns, and air-soft guns firing nonmetallic projectiles. Such term does not include any look-alike, nonfiring, collector replica of an antique firearm developed prior to 1898, or traditional B–B, paint-ball, or pellet-firing air guns that expel a projectile through the force of air pressure.

​(g) Preemption of State or local laws or ordinances; exceptions

The provisions of this section shall supersede any provision of State or local laws or ordinances which provide for markings or identification inconsistent with provisions of this section provided that no State shall—

(ii) prohibit the sale (other than prohibiting the sale to minors) of traditional B–B, paint ball, or pellet-firing air guns that expel a projectile through the force of air pressure.

(Pub. L. 100–615, §4, Nov. 5, 1988, 102 Stat. 3190.)


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All parts can be shipped within the US and to all US territories. Complete guns may be restricted from some locations. The checkout process is quick, simple and secure. Payments are accepted by check, money order, credit/debit card and PayPal. To pay by credit or debit select PayPal as your payment option, you do not need a PayPal account.


Email a list and I will send you a total including shipping. Send payment to the same email with PayPal, include the parts list in the message. All payments must be made "for goods or services" so a shipping label can be printed from the transaction. Complete guns, scopes, barrels, tubes, stocks and trigger frames are not available outside the US and US territories.