Ed Brown
Springfield Armory 1911 Operator AOS Threaded Barrels
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Manufacturer
Springfield Armory
Model & version
1911 Operator AOS Threaded
Mounting details
MIL-STD-1913 Picatinny, Agency Optic System (AOS) plate cut — Springfield Armory AOS 1911 / 2011
Parts listed
13 total
What the compatibility labels mean
How we knowHow we check compatibility
- Lab testedFit checked by Firearm Lab for the recorded setup.
- Documented fitmentSupported by manufacturer, partner, or reviewed community evidence.
- Interface matchMounting details match, but this exact model and part have not been confirmed to fit together.
Check your exact model and part before ordering. Fitment limits
Ed Brown4
Based on manufacturer information — Oct 2026. May require modification — see notes.
Barrels — Government, 9mm, standard feedramp
May require modification — see notes.
Suppressor Ready Barrels — 5" Government, 45 ACP, standard feedramp
May require modification — see notes.
Suppressor Ready Barrels — 5" Government, 9mm, standard feedramp
May require modification — see notes.
Kart Precision2
Gunsmith Fit Barrel
May require modification — see notes.
XACT FIT Barrel
May require modification — see notes.
Nowlin4
Barrel, Gunsmith, Non-Ramped
Part no. SBPGMay require modification — see notes.
Barrel, Gunsmith, Ramped
Part no. RBPGMay require modification — see notes.
Bull Barrel, .45ACP Gov. Gunsmith
Part no. SB-5SBBG-45May require modification — see notes.
Bull Barrel, 9mm Gov’t. or Commander Ramped Barrel
Part no. RB-5BBG-9May require modification — see notes.
Oriskany Arms3
1911 Match Grade Barrel, 45 ACP, 5", Stainless Steel, Standard Ramp
May require modification — see notes.
1911 Match Grade Barrel, 9mm, 5", Stainless Steel, Clark/Para Ramp
May require modification — see notes.
1911 Match Grade Barrel, 9mm, 5", Stainless Steel, Standard Ramp
May require modification — see notes.