{"id":9417,"date":"2023-05-21T15:47:08","date_gmt":"2023-05-21T19:47:08","guid":{"rendered":"https:\/\/shootingsight.com\/?post_type=product&p=9417"},"modified":"2023-05-21T15:47:08","modified_gmt":"2023-05-21T19:47:08","slug":"m1-carbine-reduced-aperture-kit","status":"publish","type":"product","link":"https:\/\/shootingsight.com\/?product=m1-carbine-reduced-aperture-kit","title":{"rendered":"M1 Carbine Reduced Aperture Kit"},"content":{"rendered":"

This is a kit to reduce the size of the late model apertures on the M1 Carbine. This is a legal modification for the CMP ‘as issued’ class.\u00a0 This modification has not been evaluated on the earlier style flip-apertures.\u00a0 It might work, but has not been tried.<\/p>\n

You do not need to remove the aperture or sight from the rifle to reduce the aperture.<\/p>\n

The kit includes a #45 drill bit, a #3-56 plug tap, a 0.050″ Allen wrench, a threaded set screw with a 0.042″ diameter hole, and Loctite.<\/p>\n

Tools you will need:<\/p>\n

    \n
  1. a tap wrench that is adaptable down to a #3-56 tap.<\/li>\n<\/ol>\n

    Steps for reducing the size of your M1 Carbine aperture:<\/p>\n

      \n
    1. Use the #45 drill bit in the aperture hole to smooth out the hole to a consistent diameter.\u00a0 This should remove very little material as the USGI aperture is almost the exact size for the tap.<\/li>\n
    2. Use the #3-56 plug tap (with your tap wrench) to tap screw threads into the aperture hole.\u00a0 Apply a few drops of oil to the tap before starting.<\/li>\n
    3. Place a small drop of Loctite on the outside of the threaded set screw.<\/li>\n
    4. Insert the threaded set screw, using the allen wrench, into the threaded hole in your aperture.<\/li>\n<\/ol>\n","protected":false},"excerpt":{"rendered":"

      This is a kit to reduce the size of the late model apertures on the M1 Carbine. This is a legal modification for the CMP ‘as issued’ class.\u00a0 This modification has not been evaluated on the earlier style flip-apertures.\u00a0 It might work, but has not been tried. You do not need to remove the aperture […]<\/p>\n","protected":false},"featured_media":9418,"comment_status":"open","ping_status":"closed","template":"","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0},"product_cat":[27,164],"product_tag":[],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/shootingsight.com\/index.php?rest_route=\/wp\/v2\/product\/9417"}],"collection":[{"href":"https:\/\/shootingsight.com\/index.php?rest_route=\/wp\/v2\/product"}],"about":[{"href":"https:\/\/shootingsight.com\/index.php?rest_route=\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/shootingsight.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=9417"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/shootingsight.com\/index.php?rest_route=\/wp\/v2\/media\/9418"}],"wp:attachment":[{"href":"https:\/\/shootingsight.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=9417"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/shootingsight.com\/index.php?rest_route=%2Fwp%2Fv2%2Fproduct_cat&post=9417"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/shootingsight.com\/index.php?rest_route=%2Fwp%2Fv2%2Fproduct_tag&post=9417"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}