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While doing my first build I ran across numerous different challenges on where after installing some expensive parts onto my rifle, with just a slight flick of the wrist your ar15 turns into a muraca! I thought I would share a few things that helped me get my rifle into a rock solid build.
First thing most people will run into will be the Upper/ Lower receiver tolerance. Now to avoid this problem you can either invest in a matched receiver set or try and buy the same brand upper/lover combo, but even then you could still have some play in between the two receivers. In my case I have a rock river car A4 upper paired with a spikes honey badger lower.... and with these two paired I quite a bit of play....but no worries there is a fix!
Here are a couple common ways to lessen the rattle...
Accu-wedge... Used to be the route most people would go to resolve wobble between the two receivers. For under $10 shipped to your door, it is hard to beat. It works by sitting in the rear or the lower receiver and providing upward force on the upper. Many people have complained about having to do some slight cutting and that this upward force prevent easy dis-assembly of the rear take down pin. I am not a fan of this method because it only addresses the rear section of the receiver but this method works very well for alot of people! http://www.brownells.com/rifle-parts...prod16662.aspx
O-Ring This youtube method is simply putting a black o-ring on the take down pin towers on the upper receiver. It is roughly about a $0.30 fix but I avoided it due to quality concerns. Video can be found here...... https://www.youtube.com/watch?v=SN0sECZNbNw
X-Shim The best choice in my opinion is to use shims. The shims I used on my build cost me $10 from varmit lights (http://varmintlight.com/x-shim-kits/). The shim kit come with feeler gauges to check the tolerance in between the two receivers. once you figure out the right tolerance you then place the according shim onto the upper receiver take pin towers (both front and rear). Within about five minutes from starting the project the wobble is completely fixed and you feel confident that it will last a long time! Installation video can be found here for more clarification. https://www.youtube.com/watch?v=OfGeyIXhb7c
Now that the receiver wobble is solved the second wobble I had on my rifle was from the but stock. I was surprised (as this is my first build) because I did not go cheap on my buttstock. I am currently running the Rock River Arms Operator Car stock and buffer tube combo, so I though that the product would have zero play. Anyways, to avoid this rattle in the first place try investing in a stock that has anti rattle features such as the Magpul stock with the vacuum thingy. If you are like me and you already have a stock that, beside from the rattle, is amazing...then listen up!
This fix was free for me seeing as I already had the supplies I would need in my garage. I also have never seen anyone else do this. What you will need is a roll of tape (I used 2inch blue painters tape) and also a sharpie (unnecessary but I like to be tidy with my work).
-Take the buttstock off of the buffer tube
-Layer on a couple 2 inch long sections of tape
-Install buttstock
Repeat this process until you feel resistance while adjusting the buttstock. For me i only used like 4 pieces of tape until the rattle went away. Make sure you don't block the holes underneath the buffer tube, if you do you buttstock wont lock in place (common sense). My buttstock has a hole on the top which allowed the blue painters tape to show through so I used the black sharpie to color ad section of the tape completely black so no one can tell that the tape is there.
(Side note on this fix... you might be able to use a form of duct tape. Either way if SHTF now you have a couple pieces of tape to use in a survival situation.)
Now wobble your rifle! It should now be silent! Let me know if you have any questions or if there are any other fixes that we should add to this list! Hope this helped!
First thing most people will run into will be the Upper/ Lower receiver tolerance. Now to avoid this problem you can either invest in a matched receiver set or try and buy the same brand upper/lover combo, but even then you could still have some play in between the two receivers. In my case I have a rock river car A4 upper paired with a spikes honey badger lower.... and with these two paired I quite a bit of play....but no worries there is a fix!
Here are a couple common ways to lessen the rattle...
Accu-wedge... Used to be the route most people would go to resolve wobble between the two receivers. For under $10 shipped to your door, it is hard to beat. It works by sitting in the rear or the lower receiver and providing upward force on the upper. Many people have complained about having to do some slight cutting and that this upward force prevent easy dis-assembly of the rear take down pin. I am not a fan of this method because it only addresses the rear section of the receiver but this method works very well for alot of people! http://www.brownells.com/rifle-parts...prod16662.aspx
O-Ring This youtube method is simply putting a black o-ring on the take down pin towers on the upper receiver. It is roughly about a $0.30 fix but I avoided it due to quality concerns. Video can be found here...... https://www.youtube.com/watch?v=SN0sECZNbNw
X-Shim The best choice in my opinion is to use shims. The shims I used on my build cost me $10 from varmit lights (http://varmintlight.com/x-shim-kits/). The shim kit come with feeler gauges to check the tolerance in between the two receivers. once you figure out the right tolerance you then place the according shim onto the upper receiver take pin towers (both front and rear). Within about five minutes from starting the project the wobble is completely fixed and you feel confident that it will last a long time! Installation video can be found here for more clarification. https://www.youtube.com/watch?v=OfGeyIXhb7c
Now that the receiver wobble is solved the second wobble I had on my rifle was from the but stock. I was surprised (as this is my first build) because I did not go cheap on my buttstock. I am currently running the Rock River Arms Operator Car stock and buffer tube combo, so I though that the product would have zero play. Anyways, to avoid this rattle in the first place try investing in a stock that has anti rattle features such as the Magpul stock with the vacuum thingy. If you are like me and you already have a stock that, beside from the rattle, is amazing...then listen up!
This fix was free for me seeing as I already had the supplies I would need in my garage. I also have never seen anyone else do this. What you will need is a roll of tape (I used 2inch blue painters tape) and also a sharpie (unnecessary but I like to be tidy with my work).
-Take the buttstock off of the buffer tube
-Layer on a couple 2 inch long sections of tape
-Install buttstock
Repeat this process until you feel resistance while adjusting the buttstock. For me i only used like 4 pieces of tape until the rattle went away. Make sure you don't block the holes underneath the buffer tube, if you do you buttstock wont lock in place (common sense). My buttstock has a hole on the top which allowed the blue painters tape to show through so I used the black sharpie to color ad section of the tape completely black so no one can tell that the tape is there.
(Side note on this fix... you might be able to use a form of duct tape. Either way if SHTF now you have a couple pieces of tape to use in a survival situation.)
Now wobble your rifle! It should now be silent! Let me know if you have any questions or if there are any other fixes that we should add to this list! Hope this helped!
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