BAT Machine Actions — Video Reveals How They Are Made
If you have ANY interest in custom rifle actions, you MUST watch this video from UltimateReloader.com. Folks, definitely watch the video — it is VERY informative! To produce this video, Ultimate Reloader’s Gavin Gear visited the BAT Machine facility in Post Falls, Idaho, and interviewed BAT owner Bruce Thom.
In the video Bruce Thom demonstrates how BAT Machine actions are created from start to finish. Bruce shows every stage of the process, employing multiple high-tech machines. It’s impressive — Forum members say that this is a “must-watch” video. Gunsmith Jackie Schmidt noted: “Great Video. Even though I have been in the machine shop business for 50 years, I still marvel at the new innovations in precision machining. Bruce has a very down-to-earth, common sense approach to explaining what to many seems like machining wizardry.” And Mark T. posted: “Watched it last night. Excellent video and excellent machining practices — precision from beginning to end.”
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For further explanation of the action production processes, with step-by-step listing of how receivers and bolt assemblies are created, read Gavin Gear’s full BAT Machine Article on UltimateReloader.com.
READ FULL BAT Machine Story HERE (More Photos) »
BAT Machine Company Was Started 29 Years Ago
Back in 1991, Bruce Thom started BAT Machine Company, which was incorporated later in 1996. Bruce’s shop stared with manual machines, quickly moving to CNC machines later in the 1990s. BAT Machine quickly achieved a following among benchrest shooters for crafting superb actions that exhibited flawless function and superb machining. Those qualities, benchrest competitors realized, helped produce tiny groups, win matches, and set benchrest records. BAT Machine now makes rifle actions for a wide variety of disciplines: F-Class, PRS, ELR, hunting, and of course short- and long-range benchrest.
BAT Action Body Machining Stages
As shown in the video, here are the major stages for the fabrication of a BAT Machine receiver body:
1. Start: raw 17-4 stainless round bar (higher toughness than typical barrel/receiver steel)
2. Heat treat
3. Bore central hole (for EDM wire), face ends
4. EDM machining (cut bore and raceways)
5. True OD, cut receiver threads and lug seats
6. Cut tang and related features
7. Finish machining including body OD, integral lug (if equipped)
Final Production Stages — Polishing and Deburring
After the receiver body and bolt are machined, they go through a deburring and polishing process.
In the image above you can see the stages. At left is a receiver body straight from machining. Some hand work is typically performed to break interior edges that are sharp from machining. In the center, the receiver shows can see the initial polish stage. During this stage, machining marks are removed by coarse polishing. Additionally for receivers that will be nitrided, that will be done next. But for actions that are NOT nitrided, a final polish brings the parts up to a high luster, as show on the right.
After polish (and nitriding if that applies) the bolts and receivers get a finish assembly, and testing for proper smooth functioning. The receivers are then registered with the ATF and shipped to the customer.
