Broaching of an Aluminum Lower Receiver Cavity for the Firearm Industry

Broaching of an Aluminum Lower Receiver Cavity for the Firearm Industry
Broaching of an Aluminum Lower Receiver Cavity for the Firearm Industry

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This project demonstrates our expertise at providing precision broaching that meets the tough demands of military and firearms industry. Illinois Broaching Co., Inc. produces these lower receiver cavities in production volumes that average 3,750 pieces per week. At the start of the project, we fabricated precision broach tooling and fixtures that would perform accurately with repeatability on these 7075 T-6 forged aluminum rifle components. We are able to broach the cavities with a precision accuracy of ±.002" on these 8.5” long by 1.75-4.00" wide work pieces. Committed to quality, we conduct careful inspections to ensure that dimensional tolerances are met. We ship the finished parts to the customer along with all applicable quality documentation and certifications required by the military and firearms industry.

For more information on this project, or how our production broaching services can improve your next application, contact us today.

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Highlights of this Production Broaching Project

Product Description
These lower receivers are used in the AR-15 Assault Rifle.
Precision Broaching Capabilities Applied/Processes
Primary:
Broaching

Secondary:
Washing
Equipment Used to Manufacture Part
CAD Systems
Surface Grinder
Broach Grinder
Overall Part Dimensions
Length: 8.500"
Width: 1.750 x 4.000"
Tightest Tolerances
± 0.002"
Material Used
7075 T-6 Forged Aluminum – Customer Supplied
In process testing/inspection performed
Inspection Reports
  • Gage Inspection, Location
Industry for Use
Military Industry
Firearm Industry
Volume
3,750/week
Delivery Location
Illinois
Standards Met
Customer Specifications, CAD Drawing
Product Name
Lower Receiver Cavity

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