Wiktionary
accurize
vb. To improve the accuracy of (a weapon)
Usage examples of "accurize".
With the extra long, accurized barrels designed for use with match grade ammunition and the new laser sights, the weapon could throw a three-inch group at seven hundred yards.
Of the three Rangers in the cherry picker, two were armed with accurized M-21 automatic rifles fitted with high-magnification image-intensifier sights.