IslandFab offers barrel threading services where you can ship the gun/barrel directly to us or drop it directly at the shop.
Why Buy Barrel Theading From IslandFab?
- No matter what the purpose of your threading job, whether its for a muzzle device or suppressor, we ONLY thread concentric to the bore. Our process allows us a tolerance <.0002". We use the same setup procedure for barrel threading and crowning that we use for custom chambering.
- We have multple lathes
- You can send us your barrel only, barreled action, or full firearm if you wish (just stripped of accessories)
- We thread based on suppressor manufacturer recommendations
- We can add tapered shoulders for slim sportster barrels
- We have a full-time gunsmith on staff
Standard Caliber Based Threads (Excluding Metric or Left Hand)
| Caliber | Thread Default | Min. Muzzle Diameter | Thread Length |
|---|---|---|---|
| Rimfire | 1/2-28 | .560" | .400" |
| .20 - .24 | 1/2-28 | .560" | .600" |
| .243 - .358 | 5/8-24 | .685" | .600" |
| .375 - .458 | 3/4-24 | .810" | .600" |
If the barrel diameter is smaller than the minimum muzzle diameter we will thread to a secondary thread size and a shoulder would need to be added to keep the bore wall thickness at a recommended value.
Example: 300 Win Mag Sportster Barrel muzzle diameter is .610. We would thread this to 9/16-24, add a shoulder then turn down an adapter to match giving you an end result of a 5/8-24 thread with a large enough shoulder and ample barrel thickness at the muzzle.
