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The ARRSUM is the new name for the old 300 RSAUM arbor for use with 223 boresight. The arbor has the same fitment; however, it does have a different name for the arbor. This is the laser bore sight for the Remington Short Action Ultra Magnum and Remington Ultra Magnum calibers and wilcat variations built on this brass. RSAUM/RSUM/SAUM are all the same designations for the Remington Short Action Ultra Magnum calibers. 

 

Calibers it will fit:

Remington Short Action Ultra Magnums 

300 RSAUM

7MM RSAUM

Remington Ultra Magnum calibers

7MM RUM

300 RUM

ARRSUM aka AR300RSAUM

$15.99 Regular Price
$13.99Sale Price
Quantity

    AimShot

    11770 Haynes Bridge Rd

    Ste 205-336

    Alpharetta, GA 30009 USA

    aimshot@aimshot.com

    678-845-8899

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