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Posted: 1/6/2021 1:26:24 PM EST
I need to swap out the commercial buffer tube on my Windham for a Mil-spec. Do I also need to swap the buffer and spring? I see there are a lot of people making buffer tubes, any suggestions on which brand.

Link Posted: 1/5/2021 7:54:48 PM EST
Buffer/spring/castle nut/ end plate all compatible.

Colt
BCM
Aero
Anderson....all good to go for mil spec sized extensions.
Link Posted: 1/5/2021 7:55:33 PM EST
No need to swap the spring or buffer.

Stick with known good brands and you'll be good to go.
Link Posted: 1/5/2021 8:01:36 PM EST
I just got a few Rainer Arms buffer tube with buffers an spring an they are really nice.
Link Posted: 1/5/2021 8:02:02 PM EST
Thanks guys!
Link Posted: 1/5/2021 8:25:37 PM EST
I think Primary Arms has a sale on buffer tubes right now

Link Posted: 1/5/2021 8:39:50 PM EST
Link Posted: 1/5/2021 8:45:21 PM EST
LMT if you can find one. BCM is my second choice. Aero is my budget pick.
Link Posted: 1/5/2021 9:02:29 PM EST
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By Strela:
Damage Industries.

https://damageindustriesllc.com/store/index.php?route=product/product&product_id=405

They're also having a super deal on an enhanced recoil spring and an H2 buffer.

https://damageindustriesllc.com/store/index.php?route=product/product&path=124&product_id=2546
View Quote

I use the Enhanced Recoil Springs in all my ar15's.
Link Posted: 1/6/2021 1:34:13 AM EST
[Last Edit: 1/6/2021 1:38:27 AM EST by imdBman]
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By Strela:
Damage Industries.

https://damageindustriesllc.com/store/index.php?route=product/product&product_id=405

They're also having a super deal on an enhanced recoil spring and an H2 buffer.

https://damageindustriesllc.com/store/index.php?route=product/product&path=124&product_id=2546
View Quote

Just FYI if you care!
Buffer Tube Snob here.  I use mostly Colt 4 Pos Receiver Extensions but after much research I have found several that have the same basic profile as the Colt with a raised portion toward the lower receiver.  The Damage Industries have the same profile as do BCM.  Here is the Damage which is the same as the BCM and Colt



Here is an Anderson which is similar to the LMT without the raised reinforcement toward the lower receiver.  They probably both work fine but they LOOK different to me.

ETA: LMT

Link Posted: 1/6/2021 6:53:42 AM EST
Another vote here for damage industries. Just received another one of their kits a couple of days ago. Best deal out there too. Probably the best fit and finish too.
Link Posted: 1/6/2021 8:10:49 AM EST
I don't understand why the commercial ones were made to begin with.
Link Posted: 1/6/2021 9:09:04 AM EST
https://www.righttobear.com/Colt-4-position-Buffer-Tube-Kit-p/ct-msbk-m4.htm

$42 for a complete Colt set. This is probably the best deal right now.

I've also seen Aero w/ H buffer for around $45 which is a pretty good deal given that it costs about $8-10 for an extra tungsten weight.

Damage industries complete kit looks good for the money too, as it is 7075. It's probably nitpicky but I always make sure to go for 7075 rather than 6061 that the cheaper brands use. If they don't say what it is, assume it's 6061.

Also worth noting, I did recently receive an out of spec 7075 buffer tube where the bottom slot was milled off center. I won't say who it was from because they took care of it, but it was a brand I had recently had good success with. Just be aware that these are the type of parts are are always sub contracted out and quality has definitely slipped this year from a lot of places.
Link Posted: 1/6/2021 9:13:32 AM EST
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By ctres94:
https://www.righttobear.com/Colt-4-position-Buffer-Tube-Kit-p/ct-msbk-m4.htm

$42 for a complete Colt set. This is probably the best deal right now.
View Quote


Just a heads up on THOSE
Link Posted: 1/6/2021 9:23:33 AM EST
Interesting, the plot thickens...

I have 1 on the way, guess we'll see how it goes...
Link Posted: 1/6/2021 1:26:24 PM EST
[Last Edit: 1/6/2021 1:26:24 PM EST by Lancelot]
Topic Moved
Link Posted: 1/6/2021 5:02:54 PM EST
Thanks for the Damage Industries info.  I just ordered several buffer kits for old lowers with commercial tubes, as well as some spare springs, a few QD swivels, etc.
Link Posted: 1/9/2021 4:00:03 PM EST
[Last Edit: 1/9/2021 4:01:52 PM EST by ctres94]
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By ctres94:
Interesting, the plot thickens...

I have 1 on the way, guess we'll see how it goes...
View Quote


Got mine last night. Compared to a known genuine colt from a factory 6920 I see a few slight differences. Finish is similar, but a tad bit flatter than my colt, not as flat as some others though. Threading method looks slightly different and there is a slight ridge around the circumference where the reinforcement part ends. Castle nut looks very similar. No way for me to say if these are just differences between sub contractors but it seems like a quality option.

Genuine colt on the bottom in this pic.
Link Posted: 1/10/2021 1:28:37 PM EST
Discussion ForumsJump to Quoted PostQuote History
Originally Posted By Grey_Man:
I don't understand why the commercial ones were made to begin with.
View Quote


Cheaper to make is my guess.
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