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9/27/2025 9:34:09 PM EDT
Is it true that these springs are only one length and can be used interchangeably in carbines (short buffer & short tube) and rifles (long buffer & rifle length tube)??
1st Cav Div, B 5/7
Vietnam/Cambodia
1970
9/27/2025 10:41:23 PM EDT
[#1]
yes
9/27/2025 11:06:21 PM EDT
[Last Edit: bfoosh06][Edited] [#2]
Yes, it is true. Left one is a Tubbs Flatwire.  Right one is a regular round wire.

I use them in all my AR's Large frame (2.5" buffer- 3.25" buffer ) and all my "small" frame ones. ( 5.56 )

*Hold on to your AR-15s. Their magic must be very powerful, or they wouldn’t want them.*
JAFOM.... Just another fat old man.

________________________________

TOGC,IADC
9/28/2025 7:18:32 AM EDT
[#3]
Tubbs make different lengths for certain applications
9/29/2025 5:38:00 AM EDT
[#4]
Quote History
Originally Posted By Mike_Golf:
Tubbs make different lengths for certain applications
View Quote


No offense, but did you mean different calibers ?  Specific to various calibers....  and just to clarify.
5.56 version...
https://www.davidtubb.com/ar15-bufferspring

Quote ... "Tubb Precision AR-15 Flatwire Buffer Spring (Fits both Carbine and Standard length stocks)"

300BK version...
https://www.davidtubb.com/ar15-tubb-parts/ar15-buffer-spring-stainless

308 / 6.5CM LFAR's...
https://www.davidtubb.com/ar10-tubb-parts/bufferspring-sr-ar10


And FWIW... the LFAR ( 308 / 6.5CM ) fits / works with ALL common buffer / buffer tube setups.  2.5" , 3.25" and 308 rifle length buffers
*Hold on to your AR-15s. Their magic must be very powerful, or they wouldn’t want them.*
JAFOM.... Just another fat old man.

________________________________

TOGC,IADC
9/29/2025 9:20:01 PM EDT
[#5]
Quote History
Originally Posted By bfoosh06:


No offense, but did you mean different calibers ?  Specific to various calibers....  and just to clarify.
5.56 version...
https://www.davidtubb.com/ar15-bufferspring

Quote ... "Tubb Precision AR-15 Flatwire Buffer Spring (Fits both Carbine and Standard length stocks)"

300BK version...
https://www.davidtubb.com/ar15-tubb-parts/ar15-buffer-spring-stainless

308 / 6.5CM LFAR's...
https://www.davidtubb.com/ar10-tubb-parts/bufferspring-sr-ar10


And FWIW... the LFAR ( 308 / 6.5CM ) fits / works with ALL common buffer / buffer tube setups.  2.5" , 3.25" and 308 rifle length buffers
View Quote

Tubbs used to just tell you to cut coils as necessary (forgot his formula of pound per coil). Didn't know he now sells precut springs.
9/29/2025 9:43:07 PM EDT
[#6]
Differences between swapping the same exact Tubbs flat wire spring into an AR Pistol that currently has a carbine buffer spring versus an AR rifle that currently has a rifle length buffer spring. Same Tubbs spring or choose a different Tubbs flat wire for these different firearms?
9/29/2025 9:46:54 PM EDT
[#7]
Quote History
Originally Posted By Hiker1911:
Differences between swapping the same exact Tubbs flat wire spring into an AR Pistol that currently has a carbine buffer spring versus an AR rifle that currently has a rifle length buffer spring. Same Tubbs spring or choose a different Tubbs flat wire for these different firearms?
View Quote

Same spring does both.
9/29/2025 10:12:47 PM EDT
[#8]
Quote History
Originally Posted By HobbitHunter:

Tubbs used to just tell you to cut coils as necessary (forgot his formula of pound per coil). Didn't know he now sells precut springs.
View Quote


Good to know.
Reminds me of how Lancer used show how to make their 30rd mags easier to seat on a closed bolt.

So much older great info sliding into un-recorded history.
*Hold on to your AR-15s. Their magic must be very powerful, or they wouldn’t want them.*
JAFOM.... Just another fat old man.

________________________________

TOGC,IADC
9/29/2025 11:08:49 PM EDT
[Last Edit: HobbitHunter][Edited] [#9]
Quote History
Originally Posted By bfoosh06:


Good to know.
Reminds me of how Lancer used show how to make their 30rd mags easier to seat on a closed bolt.

So much older great info sliding into un-recorded history.
View Quote

Can't find his forum posts, but it's still in his video, 3.6 coils is a pound.

Everything You Should Know About AR Buffer Springs


And yeah, taking a break for awhile and coming back only to find stuff that was hashed out a decade ago is being argued over again is a trip.

Edit: that's just a general observation, i didn't mean it as a dig against you or anyone else.
9/30/2025 9:53:34 AM EDT
[#10]
Quote History
Originally Posted By HobbitHunter:

Can't find his forum posts, but it's still in his video, 3.6 coils is a pound.

https://www.youtube.com/watch?v=8fMVZbrnvu8

And yeah, taking a break for awhile and coming back only to find stuff that was hashed out a decade ago is being argued over again is a trip.

Edit: that's just a general observation, i didn't mean it as a dig against you or anyone else.
View Quote


No offense taken... I see it as well.
*Hold on to your AR-15s. Their magic must be very powerful, or they wouldn’t want them.*
JAFOM.... Just another fat old man.

________________________________

TOGC,IADC
9/30/2025 10:00:15 AM EDT
[#11]
Same length spring for 9mm blowback builds?
9/30/2025 9:50:10 PM EDT
[#12]
Quote History
Originally Posted By gtsteve03:
Same length spring for 9mm blowback builds?
View Quote


Yes
I've actually been here since about 2004 as M90A1, but lost my original login info and can't get any help from the forum administration in getting it back!

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