International shipping options are available at checkout. We ship to all US states, territories and most countries.  


PayPal is the only payment method currently accepted. You don't need a PayPal account to pay by credit or debit card, you can use PayPal to checkout as a guest.


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

All parts and airguns are well packaged and shipped as quickly as possible. Due to the complete incompetence and unreliability of the USPS we are not responsible for any delays in shipping beyond that. We do not give discounts or refunds for late packages. We will re-ship or refund lost orders but don't consider a package lost until the USPS has no idea where it is and it hasn't scanned for at least three full weeks. All shipments include tracking. All orders will be shipped in 1-5 business days unless otherwise noted in our NEWS section above. If you choose Priority or other "expedited" shipping options your order will not be shipped any faster but it may arrive quicker if the USPS doesn't lose or delay it. In other words, we will make sure you get your order but you may need to be patient with the USPS. 

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.

By federal law (posted below) no state or local government can prohibit the sale of airguns but other restrictions can be imposed. It's 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's restricted or unlawful that's YOUR problem. It's legal for us to ship parts to any location in the US, all US territories and most countries but it may not be legal for YOU to posses the gun you modify or build with them. We reserve the right to refuse shipping of complete airguns to specific locations to avoid potential legal hassles.

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. No state or local government can require such marks or prohibit the sale of these guns, though many states restrict their possession and use in other ways. This law starts out by specifying that toy guns, which includes airsoft, are required to have special markings. We left subsections out that were irrelevant to pellet 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 non-guns, 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.)


​Copyright © 2015 - 2022 Magnum Gunworks, LLC ™. All rights reserved.

July 17, 2022


Our custom 13XX valves require a shorter 3/8" mounting screw for the front of the trigger-frame in order to avoid damaging the valve cap. Both the factory 7/16" screw and the screw included in our 13XX screw kits are too long for the custom valves, when tightened all the way down they create an internal bulge near the valve-check causing the valve to not hold air. A 3/8" socket cap screw is included with our 13XX valve and piston kits. Some older trigger frames with the die-cast metal trigger covers are thick enough that the 7/16" screws work fine, the newer frames with the 3-screw plastic cover are not generally thick enough and allow the screw to bottom-out, if forced to go in deeper that's when the damage occurs.

Another issue, many customers were overtightening the locking collars on the custom pistons. The Delrin base of those tends to bulge making the diameter larger if too much torque is applied, this causes the piston to bind inside the tube. The shape of those piston bases has been changed to prevent binding if the locking collar is overtightened. If you have issues with your older piston base binding you can ship it to us to be reshaped, we will ship it back free of charge, email if you need our address.

​​Please read our TUBE DEFECTS page in the TECHNICAL INFO link above for details about 22XX tubes that may not be safe for bulk-fill, PCP or HPA conversion.