How Shooting Affects Your Hearing

How Shooting Affects Your Hearing, an info graphic from The Smoking Barrel USA:

How Shooting Affects Your Hearing
Source: The Smoking Barrel USA

Allied Machine AccuPort 432 and AccuThread 856 Kits

Allied Machine & Engineering has expanded its AccuPort 432 and AccuThread 856 program to include more than 120 kits for manufacturing hydraulic ports and manifolds. The kits are now available to meet SAE J1926; ISO I6149; John Deere G1731; and SAE AS5202 (aerospace standard/Mil-Spec) specifications.

AccuPort PR Image 1

Contained in each kit is everything necessary to cut and finish the port, including an AccuPort 432 Port Contour Cutter, T-A or GEN2 T-A pilot insert(s), port form inserts, and an AccuThread 856 threadmill. Kits have a 5 day lead time if not in stock.

The J1926 and I6149 specification kits are ideal for heavy equipment applications, and are available in both metric and imperial shanks for both ferrous and non-ferrous applications. The G1731 specification with a metric shank is designed for cast iron applications, and the AS5202 comes with an imperial shank for both ferrous and non-ferrous applications.

The AccuPort 432 Port Contour Cutters enable users to drill and finish port forms in one operation. Produced to strict manufacturing tolerances that meet each specification’s finish tolerances, the patented design is ideal for ports and stud ends with straight threads and o-ring sealing. The AccuPort 432 eliminates the need for pre-drilling and allows for efficient set-up and production time. The replaceable insert design eliminates regrinding and resetting.

The AccuThread 856 provides superior thread forms when compared to other thread mills and taps. Allied’s proprietary AM210® coating provides a 25-50 percent increase in tool life over other competitive options. With a thicker core and helical flute, AccuThread 856 solid carbide threadmills offer increased strength and rigidity when cutting forces are applied. Standard cutting lengths permit multiple applications without special thread mills.

Barrels For Custom AR-15s, Part 1

Barrels are the foundation rifles are built upon. Due to no fault of the barrel maker, AR-15s often don’t deliver their accuracy potential.

by Joe Carlos
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Refinishing Fine Stocks

A detailed approach to handling and refurbishing vintage gun stocks to their original luster.

by Ray Ordorica
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1871 Vetterli Conversion

Converting an old Swiss Vetterli 1871 .41 Swiss to centerfire. Here’s a modern way to conduct the conversion with the help of a 3D printer.

by Kevin Baxter
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Special Ops

Award-Winning Powder Metal Parts

The Metal Powder Industries Federation is a federation of six trade associations representing various aspects of powder metallurgy (PM), metal powders, and particulate materials with a mission of advancing the interests of the metal powder producing and consuming industries.

Winners of the 2017 Powder Metallurgy (PM) Design Excellence Awards Competition, sponsored by MPIF were announced at the POWDERMET2017 International Conference on Powder Metallurgy & Particulate Materials. Receiving grand prizes and awards of distinction, the winning parts are outstanding examples of powder metallurgy’s precision, performance, complexity, economy, innovation, and sustainability. The winning parts show how customers from around the world are taking advantage of PM’s remarkable design advantages.

An Award of Distinction in the Aerospace/Military Category was earned by ARC Group Worldwide, Longmont, Colorado, for a metal injection molded (MIM) latch made from MIM-4140 low-alloy steel for Sig Sauer Inc. The internal latch drives a subassembly for the telescoping feature of the collapsible stock on MCX and MPX rifles. The part was designed for metal injection molding as it could not be economically made using any other fabrication method.

An Award of Distinction in the Hand Tools/Recreation Category went to Indo-MIM Pvt. Ltd., India, for a set of metal injection molded (MIM) parts—barrel block, gas block, bolt catch, 7.62 NATO mag conversion bar, ejector retainer, and extractor link—that go into an MDR rifle made by Deserttech. The MIM-designed parts replaced ones that were machined, and reduced the cost by 30% while manufacturing lead-time was cut in half. MIM is one of the PM-based technologies, that forms metal powders into precision components used in applications such as auto engines and transmissions, hardware, industrial machinery, sporting goods, defense, and firearms.