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To install...first remove the stock things...
1. Remove handguards
2. Remove front sight/gas tube
3. Remove delta ring (you might find a rubber o-ring under the deta ring on the outer barrel...leave it on the outer barrel)
Then install the new system.
1. Screw that part you linked as a picture onto the receiver threads...(it replaces your delta ring)...it only goes on one way (the side facing up is the edge closest to the receiver.
- it needs to be positioned right...from your picture...the edge that is just past 3 o'clock is the bottom...the opposite side will have a "nub" that's solid...if it had a hole in it you could pass your fake gas tube through that (I drill mine out to do that).
2. Line up your handguard. Check that it's centered/straight/etc..
3. Tighten up the 6 screws...best to do them all just barely tight...then to snug each of them down like you would for a wheel on a car...(alternating sides in a star pattern).
4. Put on your gas tube/front sight/block whatever
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