The RCBS Neck Expander Plug is designed for various dimensions including .224 .227 .264 .308 .309 .310 .321 .323 and many others. Regardless of the specific dimension preferred the plug is a replacement part used with the RCBS Neck Expander Die.
The primary benefit of using this expander plug is that expansion of the neck and flaring of the case mouth can be completed in one easy step. For reloading cast bullets this is one of the most critical steps so it is vital to choose the best product available which is exactly what RCBS offers.
RCBS Neck Expander Plug .338 cal
$16.00
1 in stock
BJ Firearms LLC is a federally licensed firearms business focused on providing quality firearms, accessories, and related services while promoting responsible ownership, education, and community engagement.
The company was founded to serve firearm enthusiasts with knowledgeable service, real-world experience, and a commitment to professionalism and safety.
We focus on real experience, personalized service, hands-on product knowledge, and community involvement — not just sales. Our goal is to help customers make informed decisions and feel confident with their equipment.
Yes. We operate as a federally licensed firearms dealer (FFL), following all applicable federal, state, and local regulations.
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We work with everyone — from first-time buyers to experienced enthusiasts. Education and guidance are a big part of what we do.
We offer firearms, accessories, gear, and related equipment depending on availability and customer needs.
Yes. We help customers evaluate their needs, experience level, and intended use to find the right fit.
Yes. Depending on the request, we can help source specific products or assist with custom configurations.
Yes. We actively engage in hands-on experiences, demonstrations, and community-related firearm activities when possible.
Yes. We support content that helps people learn about equipment, safety, and responsible firearm ownership.
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