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Crosman/QB Valve Stem Rebuild Starter
Our Price: $199.00
3 in stock!

Valve Stem Rebuild components for Professional Rebuild of the Crosman & QB Exhaust valve Assemblies. Can fit many other models and other makers. This kit gives the DIY a good variety of components so he/she can rebuild all the Old School CO2 Crosman and modern QB & TF guns. Made in USA by Mac1. A propane torch can be very helpful to get the brass head to separate from the steel stem. A .2" hole in a steel plate will allow you to drive the stem out of the head when properly supported. The seal fits in the brass head and you use a 1/8" hole in a anvil to drive the head and seal onto the stem. It is a good policy to use a permanent thread locker in the brass head for insurance. Once the head is pressed together it can be trued and faced off to ready it for use. Heat the entire gun up to toasty when you first charge it so the seals will be supple and the pressure will be high. Making sure there is no damage to the valve seat where the seal sits is very important as the Mac1 seals are hard enough so you can leave the gun charged all the time. Getting it to seal initially can be impossible if there is any seat irregularity. Polishing the seat is often required to remove any scratches or abuse. If you use the parts that make for the most reliable repairs imaginable a DIY project can be the best investment you ever made in an airgun. Quality parts last. Your time is wasted when you use inferior parts.
Those that don't have a lathe to cut the seal after install need to spin the head in a driil motor with seal fitted to brass cup prior to assembly to get a reasonable finish on the exhaust valve seal so it will work. Once assembled the DIY needs to be certain the stem runs true and chucking the head and spinning assembly will show you if it got bent on assembly. The stem needs to run true to the head and the thru hole needs to be true to the seat or hard seals won't make adequate contact.
Does not include the steel stem except in the Case of the 6xMKI exhaust valve assemblies. Brass head and seal only on the remainder of the components. MKI early steel stems can be S&W 78 stems if you shorten a small amount (longer tail guides the spring).
This Kit includes
15x Exhaust valve seals(13 small and 2x622)
6x MKI Complete Exhaust Valve w/return spring
6x MKI/S&W/Etc Small head
2x 600 valve head
4x 160/150/180/400 head
2X 622 heads
These components should be able to rebuild over 20 CO2 exhaust valves for under $10 each. For hard core DIYs or Pro Tuners. If you have the skills don't let them go to waste using inferior components.
22 CI Regulated PSI HPA Tank
Our Price: $134.00
(Out of Stock)

PSI regulated HPA air tank 3000 psi max input PSI/22CI. Foster type male fill nipple. Tank pressure available in 1000, 1200, 1400, 1600 & 1800 PSI output. Higher than 1000 PSI Output is a $25 premium. All the Reg pistons get upgraded to 90 durometer Mil Spec orings to extend service intervals. Catalina Cylinder with Ninja Reg. Made in USA. Orings Upgraded throughout w/ Mil Spec 90's, Regulator output pressure is verified, pressure tested and assembled by Mac1.
Lothar Walther Polygonal twist 16mm .177 barrel blank with Choke
Our Price: $125.00
(Out of Stock)

Lothar Walther 16mm .22 Polygon rifled with Choke
Our Price: $125.00
(Out of Stock)

Lothar Walther 16MM .25 Barrel with Choke
Our Price: $125.00
9 in stock!

Lothar Walther barrels are the typical Hi-End manufacturers choice in
Quality barrels for Airguns. We carry 16MM choked blanks and use them on
the majority of the guns we manufacturer.
Lothar Walther 16MM .22 Barrel with Choke
Our Price: $125.00
2 in stock!

Lothar Walther barrels are the typical Hi-End manufacturers choice in
Quality barrels for Airguns. We carry 16MM choked blanks and use them on
the majority of the guns we manufacturer.
Lothar Walther 16MM .20 Barrel with Choke
Our Price: $125.00
2 in stock!

Lothar Walther barrels are the typical Hi-End manufacturers choice in
Quality barrels for Airguns. We carry 16MM choked blanks and use them on
the majority of the guns we manufacturer.
Lothar Walther 16MM .177 Barrel with Choke
Our Price: $125.00
3 in stock!

Lothar Walther barrels are the typical Hi-End manufacturers choice in Quality barrels for Airguns. We carry 16MM choked blanks and use them on the majority of the guns we manufacturer.
Mac1 Billet Plug/Lever & Adj Piston KIT
Our Price: $99.00
(Out of Stock)

Replacement Solid Steel (Billet)Pump Lever with blued finish. Includes Mac1 Round rivet, hard bush for primary pivot & felt bumper. You can option for longer (EXTENDED) lever for $10 more. These are the components used in the Custom Mac1 Steroids we do. Kit Includes the Billet Lever, Link, Adjustable Piston and Steel front plug with all Mac1 hardware to put the front end together. The Standard lever geometry fits both the Older rocker safety guns as well as Benjamin late and early as it has both sets of pin mounting points. Extended Billet levers fit Late model guns made since 1990 and all Benjamin Rifles.
Made in USA by Mac1.
Mil Spec 90 Durometer 50x113
Our Price: $99.00
Sale Price: $89.00
Savings: $10.00
4 in stock!

90 Durometer seals are the good stuff and these o-rings are selected to do the heavy duty lifting. If you choose long life over economy this is the best choice. Often quality seals result in more reliable systems and lower overall cost of ownership. If you're going to keep it or take pride in the work you do there is nothing better than guns that last for decades rather than years. The use of quality parts is a good investment. These are the seals I use on the bench for my Custom Work and there is no better available. Mil Spec means a decade of harsh service minimum and often much better.Installation should be with a Proper O-ring lube like DC 111 Dow Corning Grease. These o-rings are very hard and durable and you will find many instances where the next size smaller is the best choice to stretch into the groove so the interference is not excessive. Hard o-ring last a long time but the fit must be a more precision affair where the irregularities will not be tolerated by the harder material and compressing the harder material will require more force or room. These parts are the Lays Potato Chips of AGsmithing. You will not be able to eat just one so you may as well get yourself a big bag. 50 o-rings for less than $2 each may sound ridiculous but I promise you will find a place for them because the best o-ring made always finds a home. Often not on an airgun. If you are an active DIY playing with PCP and CO2 these are the answer to so many questions it would blow your mind. The 113 is the Tube oring for the Marauder Pistol, the Crosman CO2 Caps for all the old school pressure vessel guns, the QB & TF series and numerous domestic and foreign applications too numerous to list. These will take about 30 years to drain down a 12 gram CO2 because that is how long they last.