Will the RCBS Trim Mate Military Crimp Remover R90381 fit my standard case prep station?

Yes, this tool features an industry-standard 8-32 thread pitch, allowing it to screw directly into popular motorized case preparation centers like the RCBS Trim Mate Case Prep Center or the RCBS Brass Boss. Ensure you are using it with lower RPM settings on your prep station to prevent excessive heat buildup that could dull the hardened tool steel cutting edge.

Can I use the R90381 model on .308 Winchester or 7.62mm NATO military surplus brass?

No, the R90381 is specifically engineered for small primer pockets only, such as .223 Remington and 5.56mm NATO brass. For larger military brass like .308 Winchester, 7.62mm NATO, or .30-06, you will need the large-pocket variant model (90380).

Does this steel cutting accessory require any electrical safety certifications for use in Australia?

No, because the RCBS R90381 is a purely mechanical, non-electrical steel tool accessory, it does not require electrical safety approvals, SAA, or RCM certification on its own. However, if you are plugging a motorized case prep station into Australian 240V mains power, that parent unit must feature an AS/NZS 3112 plug and carry the appropriate RCM mark.

How does this tool remove military crimps without damaging the brass pocket?

The R90381 uses a specially engineered compound angle cutting edge rather than a straight cone or a swaging pin. Instead of pushing metal aside, it cleanly reams out the ring of crimped brass to create a rounded, chamfered edge that preserves the overall structural integrity of the primer pocket wall.

Military Crimp Remover - RCBS R90381

RCBS Trim Mate Military Crimp Remover - Small Overview

The RCBS Trim Mate Military Crimp Remover - Small (Model R90381) is a precision-engineered accessory designed to streamline the reloading process of military surplus brass. Military ammunition is standardly manufactured with a robust primer crimp to secure the primer under harsh conditions. This tool is built specifically to remove that crimp, allowing reloaders to safely seat new primers. Crafted from hardened tool steel for maximum cutting-edge durability, this accessory features a compound angle cutting edge rather than a straight cone. This unique geometry removes the stubborn staking crimp while fully preserving the structural integrity of the pocket wall. Instead of swaging or pushing metal aside, it cleanly reams the brass to create a rounded, cleanly chamfered edge.

Key Features

Hardened Tool Steel: Engineered from high-grade tool steel to ensure maximum cutting edge durability and a long service life during high-volume processing.
Compound Angle Cutting Edge: Designed with compound angles to precisely target and remove the ring of crimped brass without thinning or damaging the pocket wall.
Efficient Reaming Action: Reams away the crimp to produce a clean, rounded chamfer, facilitating smooth primer seating.
Non-Powered Tool Head: Operates as a rotary cutting head that relies on the drive of a motorized case preparation center or a manual hand tool handle.
Low RPM Optimization: Designed to perform optimally at the lower rotation speeds of dedicated prep stations, preventing heat buildup that can dull the cutting edge.

Specifications

Model Number: R90381 (also listed as 90381)
Thread Pitch: Industry-standard 8-32 thread
Pocket Compatibility: Small primer pockets
Weight: Under 30 grams
Length: Approximately 2 to 3 cm
Material: Hardened tool steel

Who is the RCBS Trim Mate Military Crimp Remover Small for?

High-volume military brass reloaders — need to efficiently clear primer pocket obstructions from .223 Remington and 5.56mm NATO cases using a dedicated tool designed specifically for small primer pockets that weighs under 30 grams.
Handloaders using motorized case prep stations — require direct, seamless integration with power prep units via an industry-standard 8-32 thread to automate the reaming process and eliminate manual chamfering fatigue.

Less suitable for: Processing large rifle or large pistol cases, such as .308 Winchester, 7.62mm NATO, or .30-06, which exceed the dimensional limits of small primer pockets. For these larger calibres, a dedicated large primer pocket military crimp remover is required to match the wider pocket dimensions.

SKU	RC39284LP
Model #	R90381
Brand	Rcbs
Shipping Weight	1.0000kg

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Rcbs R90381 Trim Mate Crimp Remover Small Tool Steel 8-32 Thread

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