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8/13/2026 1:32:47 PM EDT
[Last Edit: Kalashnikov762][Edited]
Just did the paperwork for my first handgun can....a Rugged Obsidian 45.  

The can comes with a booster installed.  I was told that I need to get a fixed barrel spacer and put it in place of the booster spring.  

Ill be using it on a 1911.  I've never considered a 1911 barrel to be fixed but the sales rep at the LGS told me that is the case and why I need the fixed barrel spacer.  

Am I getting the right advice?  I'm GTG on rifle cans but this is my first for my handguns.
8/13/2026 1:45:36 PM EDT
[Last Edit: RolandofGilead][Edited] [#1]
I have an obsidian 45 too. I don't understand why he would tell you that...
I have 4 mounting solutions for it:

1. Trilug for my MP5 and Scorpion
2. 9mm position for pistols
3. 45 piston that it came with
4. A rugged 5/8x24 direct mount with no spacer needed for my AR45

My 1911 isn't threaded yet, but my 2011 takes the 9mm piston fine.
I don't think it'll work right with a spacer.

Maybe there's some special case I'm unaware of.
Your boos mean nothing, I've seen what makes you cheer
8/13/2026 1:53:16 PM EDT
[#2]
No, you'll need to use the booster with the spring installed on any Browning locked breech style handgun, including the 1911.

You use the fixed barrel spacer instead when attaching to firearms that don't have a barrel locking mechanism, like on an AR9 or similar PCCs.
8/13/2026 2:22:41 PM EDT
[#3]
Quote History
Originally Posted By RolandofGilead:
I have an obsidian 45 too. I don't understand why he would tell you that...
I have 4 mounting solutions for it:

1. Trilug for my MP5 and Scorpion
2. 9mm position for pistols
3. 45 piston that it came with
4. A rugged 5/8x24 direct mount with no spacer needed for my AR45

My 1911 isn't threaded yet, but my 2011 takes the 9mm piston fine.
I don't think it'll work right with a spacer.

Maybe there's some special case I'm unaware of.
View Quote

Yeah...it didn't make sense to me either.  I challenged him on it but he insisted I needed it.  Even the manual doesn't support his advice.

Always best to ask the hive.  Ill order it anyway in case I get a threaded barrel from my 92.
8/13/2026 2:23:41 PM EDT
[#4]
Quote History
Originally Posted By D_Man:
No, you'll need to use the booster with the spring installed on any Browning locked breech style handgun, including the 1911.

You use the fixed barrel spacer instead when attaching to firearms that don't have a barrel locking mechanism, like on an AR9 or similar PCCs.
View Quote
There is a bit of an exception if your using a Rugged direct thread rugged mount on a PCC, you don't need a spacer.
Your boos mean nothing, I've seen what makes you cheer
8/13/2026 2:37:55 PM EDT
[#5]
Quote History
Originally Posted By RolandofGilead:
There is a bit of an exception if your using a Rugged direct thread rugged mount on a PCC, you don't need a spacer.
View Quote

Sure, the direct thread would completely replace the booster assembly.  The spacer just converts a booster into a direct thread mount for cases where your can either can't accept a DT mount or it's cheaper/easier to use spacer in the booster you already own.
8/13/2026 2:54:43 PM EDT
[#6]
Quote History
Originally Posted By D_Man:

Sure, the direct thread would completely replace the booster assembly.  The spacer just converts a booster into a direct thread mount for cases where your can either can't accept a DT mount or it's cheaper/easier to use spacer in the booster you already own.
View Quote
Yeah just clarifying because I remember it wasn't clear to me at all when I got started.
Your boos mean nothing, I've seen what makes you cheer
8/13/2026 3:45:20 PM EDT
[Last Edit: Dale5150][Edited] [#7]
The direct thread mount will probably be quieter as the fixed spacer shuts off a lot of blast chamber space. I love how the "experts" give out all of this totally incorrect information.

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