1) Please do NOT try to rotate the adjusting knob on the front of the gas block until you have read the instructions fully and it has been installed on the barrel! A) You need to install your gas bushing from your current Ruger factory gas block into the new gas block. B) When installing the gas bushing into your new gas block, understand that the gas pipe may need to be pulled out slightly and at the same time rotated left or right just a fraction. C) Do this while looking into the gas bushing hole in the gas block. D) You can then see the recessed hole in the gas pipe. E) Make sure they are aligned. This way the gas bushing will seat in through the gas block’s bushing hole and down into the recessed gas pipe hole. (See Illustration 1# & #2)
2) If the gas bushing does not drop all the way in and seat, the gas pipe still may be rotated or not aligned. F) This is not correct and the gas block will not sit flush on the barrel resulting in damage to the gas pipe when tightening the gas block on to the barrel. G) When the gas bushing is seated all the way into the gas pipe it should not rotate.
3) Once the bushing is seated and the gas block is installed onto the barrel it is time to test fire your rifle. H) The adjusting knob is preset to fully open DO NOT BACK IT OUT ANY FURTHER! If the rifle is throwing the spent casings further than you would like you will need to start to close (Clock wise) the adjusting knob one click at a time until you achieve your desired distance the spent casings are being thrown. I) If you are not sure where full open should be because you have moved the adjusting knob during installation then turn the knob clockwise till it stops, that is fully closed. J) Fully closed there is not any gas being delivered to the operating rod and the rifle will not cycle. K) At that point you can slowly turn the adjustment knob counter clock wise a maximum of 3.5 to 4 full turns and no more, which is fully open. L) If you do open the adjusting knob more than 4 turns you may lose the adjusting knob and the replacement cost is $29.99. M) Special note: Some rifles may require that the gas port hole be enlarged if the rifle does not cycle. The gas port is the hole in the barrel that the gas passes through into the gas block. This is very easy to do. Please call us and one of our qualified gunsmiths will walk you through the 2 minute process. ) Accuracy Systems, Inc. - 1661 Behrens Rd. - Byers, Colorado 80103 - 303-822-6849 firstname.lastname@example.org