Ed Brown
Rock Island Armory GI Standard FS Threaded Barrels
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All Rock Island Armory models · barrels →
Manufacturer
Rock Island Armory
Model & version
GI Standard FS Threaded
Mounting details
Not recorded
Parts listed
9 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 Brown2
Based on manufacturer information — Oct 2026. May require modification — see notes.
Suppressor Ready Barrels — 5" Government, 45 ACP, standard feedramp
May require modification — see notes.
Jarvis, Inc.1
Jarvis 1911 Barrel — Government 5" 45 ACP
Kart Precision2
Gunsmith Fit Barrel
May require modification — see notes.
XACT FIT Barrel
May require modification — see notes.
Nowlin3
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.
Oriskany Arms1
1911 Match Grade Barrel, 45 ACP, 5", Stainless Steel, Standard Ramp
May require modification — see notes.