BROWNING Gun Oil – Step 4 – 124032 Browning Gun Oil, Step 4 is a proprietary gun oil formula that is made to meet military specifications of performance. Browning Step 4 Gun Oil provides superior protection against corrosion and excellent lubrication of your firearm’s moving parts. Browning Step 4 Gun Oil provides lasting lubrication to keep your firearm in like-new condition for years to come, and contains all-natural materials. The 2 ounce bottle includes a pinpoint applicator. This item will be shipped in compliance with all USPS regulations or will be shipped ORM-D (which requires the package be marked as such) with domestic shipping only.