66/73 Rifle Magazine Tube End Cap Wrench
66/73 Rifle Magazine Tube End Cap Wrench
Mag Tube Cap (Courtesy of Uberti)Stress Riser
Click to enlarge image(s)
It is difficult to find a screwdriver or bit that will fit the long, thin slot on Winchester Model 1866 and Model 1873 rifle magazine tube end caps. Plus, not all end caps have the same slot width!

The 66/73 Rifle Magazine Tube End Cap Wrench is the perfect tool for loosening or tightening the end caps on Model 66/73 magazine tubes. It allows you to easily remove the end cap without damaging the slot.
66/73 Rifle Magazine Tube End Cap Wrench

 Two Blades, one at each end, are oriented at 90 degrees to each other. So you
 will always be able to engage the end cap slot, regardless of its orientation.
 1/2" Long Blades engage the end cap slot across its full width.
The Blades are Sized to fit most end cap slot sizes.
 Square Profile Blades won't slip out of the slot like conventional screwdriver blades.

Customer Feedback
"I also liked the wrench for the loading tube on 66/73 Uberti lever guns. I have both a 66 and a 73 and it worked on both. I will stop by your booth at Winter Range and pick up another one to throw in my gun cart, and take a look at all the new stuff."
— Jim F. – Parks, AZ

"I received my cap wrench this morning and have already tested it. It works perfectly. Thanks for the prompt service. Good work!"
— Jim H. – Abilene, TX

Read reviews of the 66/73 Rifle Magazine Tube End Cap Wrench in the following magazines!
Todd G. Lofgren, "Tinkering Tools, Make your cowboy experience that much more enjoyable!"; Gear & Garb,Guns of the Old West, Winter 2012, Page 8-9. Click Here

Captain George Baylor, "Dispatches from Camp Baylor - Mini-Tests"; The Cowboy Chronicle, Vol. 24 No. 8, August 2011, Page 47. Click Here


Apply a penetrating/rust dissolving oil (e.g. Kroil® or similar.) to the end cap threads and let set for at least several hours before attempting removal. If possible, prop the rifle muzzle down over night in a cup filled with penetrating oil. This is especially critical if the magazine tube end cap has never been removed previously.


Apply SLIDE-GLIDE Standard to the magazine tube end cap threads before reassembly. The unique lubrication and corrosion inhibiting properties of SLIDE-GLIDE make it a perfect choice as an Anti-Seize compound in this application.
NOTE: Although SLIDE-GLIDE Standard is recommended, if you already have SLIDE-GLIDE Lite, it will work just as well.

Photo of Uberti 73 Mag Tube End Cap is for illustration only and is not included with the wrench.
Manufactured by UniqueTek, Inc. under license from Saber River Gunsmithing.
Made in USA Logo

Blades 2
Blade Width 1/2"
Blade Thickness 0.030"
Wrench Length 5-7/8"
Wrench Width 1/2"
Wrench Thickness 1/4"
Material 303/304 Stainless Steel

Customer Reviews

Average rating from 1 reviews: 5.0
Mag Tube WrenchI think your wrenches are top notch. I first saw them about 7-8 yrs. ago, after losing one I hand made in the late 90's. They work great , and I've sent quite a few pards your way. I've got 3 ,,gun cart ,, gun room and one in the toolbox in the gun room. 46 yrs on aircraft , military and civilian side on military acft , antisieze is your friend. Written by William Metz on Tue 13 Feb 2018 7:50:25 PM GMT
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