No need to worry about the gas tube and key aligning properly when you put it together. The gas tube just needs to be straight in line with the barrel and it’ll be guided by the upper for proper alignment.


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I’ll take some pics for you when I put my pistol upper together this week.


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Umm..Lisa said you're sweeping and mopping..

OK Thanks. I gather the gas tube enters that little "cross" at the top of the upper and that will align it.


Anyway, I now have the lowers, FCG and the Andersen lower matches its upper perfectly. I gather the buffer spring detent is part of the LPK, correct? Otherwise, I'll have to buy that as well. I'm looking at my YT videos on assembling my uppers/lowers to see if there are any other parts I need. I'll get them in mid-October.



I'm having a little trouble finding the barrel nut (the one in the picture you listed) that goes with the MAGPUL M-Lok HG. I'll call MAGPUL to see if it's included with the HG. Now, does that barrel nut include the delta ring or is that another separate purchase?

EDIT: MAGPUL does *not* include the barrel nut with it's HGs, as verified by a MAGPUL rep. He also said they don't sell them separately, either. He did indicate that any std. barrel nut and delta group (springs & retainer clip, etc.) will work.


So I'll order those separately.

Building Confidence
 

The detent comes in the LPK. You should be able to buy the barrel nut with the delta ring assembled from any of those sites I gave you. Parts are a bit difficult to source right now but, should pop up here and there.

PS: Yes, the gas tube goes into the upper through the cross opening and that’s what aligns it to the bcg.


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Go play in traffic.


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https://i.imgur.com/kJkth3Yl.jpg

https://i.imgur.com/RCOGxuIl.jpg

https://i.imgur.com/YellZGGl.jpg

https://i.imgur.com/SAJwVfIl.jpg

If you don’t care about color I have a FDE mid length MOE handguard if you want it. I also have the correct circular handguard retainer you would need. The triangular one won’t fit MOE.

If your budget is tight skip the lower vice block. Also I use vice grips to do the majority of the roll pins. Squeeze them instead of hammering.

https://youtu.be/q11mziNfzmc

We may do business on the retainer. I already purchased the triangular retainer. If that doesn't work, then I'll try yours..... But I definitely want the "black and scary" HG :D

I had originally ordered a FDE Carbine size from PSA. I was all set up to do my first build and went to slap all the parts together and found out they sent me the mid length size. Called them up and they shipped the carbine FDE to me and said it wasn’t cost effective for me to ship the mid back and just keep it. All my other builds have been evil black rifles so it sits in my spare parts box, waiting for a home!

PM me your address, I’ll send the retainer. Depending on how your barrel is set up it could go on early in the assembly so by the time you realize you need it, you won’t be able to get any assembly done and it will set you back a whole week. Better to have it and not need it, than a week of frustration.