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rangemateThe RangeMate™ Optics Mount gives you the same functionality as a tripod, but with a whole lot more flexibility and assurances that your equipment will never get damaged again due to accidental “tip-over”.

RangeMate is great for birding, spotting at the range, cameras and photography, and rangefinding (especially when ranging on a small, distant target when you need to to have stability for the laser crosshairs).

RangeMate™ is the solution!

When is an Optics Mount better than a tripod ?

When it's not a tripod !

RangeMate mounts anywhere...

rangemate2      henry the range                   ...on a car window

cameras     case

         ...great for cameras carrying case included !


  • Standard ¼ - 20 threaded head fits cameras, scopes, etc.
  • Clamping collar securely locks ball swivel while allowing fine adjustment.
  • Unique 3-point clamping is ideal for stability.
  • Cushioned clamp isolates vibrations.
  • Fully adjustable height provides a comfortable view from any position.
  • Durable corrosion resistant materials stand up to harsh conditions.


RangeMate Accessories

laser     binoculars

Laser Range Finder Adapter         Binocular Adapter Mount   

(range finder not included)          (binoculars not included)

rangefinderadapter     binocularadapter

Category: Store

GaugeMate Gold adapters are specifically designed to remain inside the gun so that only the spent shell or casing is extracted for quicker reloads.

Machined from solid stainless steel, each GaugeMate adapter is elegantly designed for rugged durability and is compatible with both heavy field loads and steel shot.

GaugeMate adapters fit break action guns, both classic and new and are ideal for training, skeet and target shooting.

Without GaugeMates                          With GaugeMates     



  • No moving components to jam or fail.
  • Shotgun adapters pattern like full-length tubes. Click to see patterning results.
  • Full selection of sizes, for both shotgun and pistol/rifle sizes



GaugeMate Shotgun sizes:
FOR 10ga GUN FOR 12ga GUN FOR 16ga GUN FOR 20ga GUN
10-12 12-16 16-20 20-28
10-12XL* 12-20 16-28 20-410
10-16 12-28 16-410 FOR 28ga GUN
10-20 12-410   28-410
*10-12XL fits 3 1/2" ammo
GaugeMate Cartridge Available sizes:
FOR 12ga GUN FOR 16ga GUN FOR 20ga GUN FOR 28ga GUN
12-.45 auto 16-.45 auto 20-.357/.38 spc 28-.22* LR
12-.44 mag 16-.44 mag 20-9 mm  
12-.357/.38 spc 16-.357/.38 spc 20-.22* LR  
12-9mm 16-9 mm   FOR .410 GUN 
12-.22* LR 16-.22* LR   .410-.22* LR


*With conversions that use rimfire casings, we recommend to insert the converter and rotate it so that the inner barrel is at the top or bottom. Take note of this position as it will mean you are always shooting high or low.

To download a copy of the Instructions For Use, click here.
Category: Store

customGaugeMate provides a unique service to the shotgun community. We now make GaugeMate Custom adapters for many odd or obscure gauge-combinations.

If you want to shoot .410s thru your 4-gauge shotgun or have a garage full of 32-g ammo you’d like to use in a 20-g, give us a call at 1-800-709-9910.


One of the first requests came from Silvio Calabi, the Chief Operating Officer for Speedway Illustrated magazine. Silvio was formerly editor of SHOOTING SPORTSMAN magazine and still occasionally contributes articles.

His “problem” was a gorgeous Ferlib ‘Prince’ 24-gauge shotgun. The Italian-made side-by-side boxlock has ejectors, double triggers, 65mm chambers, 27” browned barrels; coin-finished action body, toplever, triggerguard & tang and forend fittings all 100% coverage tight scroll by S. Panteghini. With a straight-grip stock and splinter forend it weighs 5 lbs 5.5 oz. The gun was originally made as part of a nine-gun, consecutively numbered set. When it became part of Silvio’s collection, he wanted to use it – but 24-g cartridges aren’t an item you pick-up at WAL-MART. So he called GaugeMate and asked if we could make 24-g to .410 adapters? No problem.

After using the adapters he sent GaugeMate President Henry Fletcher the following report on April 10, 2006.

“Yesterday I was able to run 100 rounds (AA, 2.5”, half an ounce of #8.5 shot) thru my custom GaugeMates on a sporting clays course, and the results were astonishing.

Shooting ‘against’ five others, also all carrying side-by-sides (i.e., not sick & twisted clay crushers) and all experienced, good to expert shooters, I was able to keep up with the 12-gauges and in some cases outperform them. I was very surprised at how far out I could break clays.

I suspect my Ferlib is tightly choked (as new Italian guns usually are), but intuitively I have a hard time grasping that choke in such an ‘overbored’ tube could much affect the payload. Before you ask: I did not specify the boring of the gun, nor have I patterned it, as things keep falling out of the sky when I point it at them.

The outer walls of the GaugeMates forward of the O-ring got very black. The gun barrels collected considerable grime too, including a distinct trail of what appeared to be unburned powder in the bottom of each tube. However, I got no real sense of any reduction in payload speed. On several long targets there was the usual infinitesimal delay before the impact one experiences with any shotshell, but the breaks were as crisp as usual.

We laughed all day over these tiny cartouches. Good shit, mon!


At the other end of the spectrum, we got the following e-mail concerning our 8 to 12-g adapters.

“What a hoot. These adapters are the greatest. Who else can go to the gun club and shoot a round of skeet or sporting clays with a vintage 8-gauge Parker. The chokes work just fine, giving a tight pattern that smokes the clays. Sunday I will try a round of trap as the pattern is more suited to trap than skeet. Thanks for the fun.”

— Peter, from Cody, Wyoming"

GaugeMate Custom adapters can accomodate a wide variety of barrel and ammo sizes.  GaugeMate Custom adapters are available in both our Premium "stay in the gun" style and our Silver "economy" style.

Category: Store

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Adapter Info

See GaugeMate's sub-gauge adapters in action in our Gaugemate Challenge Video
gaugemate video

Learn more: "How Sub-Gauge Adapters Work

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