• Works with both 45° and 90° gas ports
• The ID of the sight is .597 and clamps in place in the existing gas block location. Acceptable journal range for gas block is .590-.599.
• The sight comes in a black oxide finish
• Drum and post included already installed
• Comes with AK Sight Tool
• Gunsmith installation is not required, but highly recommended
• 9/64 allen wrench needed for clamping screws (Not included - We highly recommend using a tool such as Wheeler inch torque wrench and the use of thread locker to prevent the screws from backing out under fire)
• 1/8th allen wrench needed for gas set screw 
• Pinch screw torque 25in - 50in lbs (Due to varying spec of AK barrels)
• Weighs 4.8oz

***Our gas blocks will work with most AKM/AK74 patterned rifles with the acceptable journal range listed above. For all Serbian/Yugoslavian, Chinese, Vepr, or other larger size barrels it will require a professional gunsmith for installation.***

Zeroing Recommendations:

For RD builds we will traditionally do a rough zero at 25yds with the rear sight set at the 100 mark. This should get you on paper at 100yds. At that point adjust your elevation for a 100 or 200yd zero and print groups from 25yds to 300yds to know your drop.

We suggest a 100yd zero for 7.62x39 AKs and a 200yd zero for 5.45x39 & 5.56x45. We've founds that these distances provide the best groups for combat effective accuracy at different distances out to 300yds+ before needing to "hold over" or combat effective hits.