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A client sent us the image below and asked if this came from us. It did not. Your account is managed by you on the web site, we will never send an email like this.
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A client sent us the image below and asked if this came from us. It did not. Your account is managed by you on the web site, we will never send an email like this.
Be safe out there!

We have seen a ton of demand for Ackley calibers since the publication of Fred Zeglin’s two new books in 2017. For this reason we have created a category on the 4D web site to separate out all Ackley cartridges making them easier to find. They still appear in the standard caliber listings as well….
One of the cool things about writing a book is that during the research for the book you learn a lot about people. I was able to interview a number of interesting and well known folks in the gun world while researching P.O. Ackley, America’s Gunsmith. If you would like a little more behind the scene…
4D is proud to announce that we have made an exclusive deal with Tyler Jacobs, Owner of Sherman Wildcat Cartridges. We are now the exclusive source to rent proprietary reamers and headspace gauges for the entire Sherman lineup. While Fred Zeglin was working on the second edition of his Wildcat Cartridges book for Gun Digest…
4D has a proven method for shipping tools safely to the client. We use padded envelopes in addition to the mailer when we ship orders to clients. None of the shipping providers are gentle with packages. So, this ensures the tools make the trip all the way to the intended destination. It is super rare…
Art of the Gun @ Mitchell Museum in Trinidad Colorado was held the weekend of June 9-10, 2017. This event was held in conjunction with the 70/40 Anniversary of the TSJC Gunsmithing Program. 70 years ago P.O. Ackley helped start the first gunsmithing program at any college in the U.S. 40 years ago the School joined…
Part I We talk to hundreds of gunsmith’s each month. It surprises me how often these “professionals” decide not to use a headspace gauge when they are available to them. They say, “No, that’s OK I will just use brass.” The reason that we are still using brass cases in firearms after more than a…
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