Jarvis, Inc.
Springfield Armory 1911 Emissary 4.25" AOS Barrels
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Manufacturer
Springfield Armory
Model & version
1911 Emissary 4.25" AOS
Mounting details
MIL-STD-1913 Picatinny, Agency Optic System (AOS) plate cut — Springfield Armory AOS 1911 / 2011
Parts listed
5 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
Jarvis, Inc.2
Based on manufacturer information — Aug 2026. Jarvis 1911 Barrel — Commander 4.25" 9mm
KKM Precision2
.355 Wilson/Nowlin Ramped
May require modification — see notes.
.355 Wilson/Nowlin Ramped with 1/2×28 Suppressor Threads
May require modification — see notes.
Nowlin1
Bull Barrel, 9mm Gov’t. or Commander Ramped Barrel
Part no. RB-5BBG-9May require modification — see notes.