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henryGaugemate designs and manufactures quality shotgun, pistol and rifle adapters and accessories.

Located in the Northern California foothills 20 miles east of Sacramento, we have been in business for over a decade.

Our adapters are manufactured in the USA and we keep inventory of our products on hand for prompt shipment to our customers. Most orders are processed the same day.  We continuously strive to design New Products with the help and input of our loyal customers.

“Ingenuity, work ethic and knowledge combine to make us who we are.”
                                                                                                              —Henry Fletcher
                                                                                                                  Founder, GaugeMate LLC

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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

Call us at
1-800-709-9910