RCBS Neck Expander Plug .309 cal
$13.20
The RCBS Neck Expander Plug .309 cal is a replacement part for the RCBS Neck Expander Die, allowing you to expand the neck and flare the case mouth in one step for efficient reloading of .309 caliber rounds.
1 in stock
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.
| Weight | 0.038 lbs |
|---|---|
| Dimensions | 3.150 × 2.750 × 1.000 in |
| Manufacturer | RCBS |
| Material | Metal |
| Compatible With | RCBS Neck Expander Die |
PROCESSING & SHIPPING
Orders typically ship within 1–3 business days (Monday–Friday) after payment and all required documentation are received. Time to arrival after shipment depends on the carrier. Shipping method is at BT Gun Company’s discretion; ammunition and oversized accessories are charged at actual shipping cost. We do not ship to Hawaii or Alaska.
FIREARM TRANSFERS
- Firearms must ship to a licensed FFL dealer of your choosing — confirm with them first that they can accept the transfer.
- Your receiving FFL will need to email their license to [email protected] before we can ship.
- Inspect your firearm at your FFL’s location before signing ATF Form 4473 — once signed, the firearm is considered accepted.
You’re responsible for knowing the firearms laws in your state before ordering. For complete shipping, returns, and restocking-fee policy details, see our Shipping & Returns page.

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