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Barrel Extension

Barrel Thread with Protector

Barrel Thread with Protector



Turnaround for barrel threading is around 3 weeks.

Aquila offers barrel threading services for virtually all situations from just plain threading to machining special adapters.  We single point cut any thread pitch you require and it will be absolutely square and concentric to the bore.  Threads cut on blued barrel will be reblued. Some mounts do not have the proper relief cuts, therefore, we machine tenens on all the barrels we thread for proper fitting.

Our thread protectors are all custom machined for the application to match the current barrel and special diameters for autos.  Thread protectors for stainless barrels will be virtually seamless.  For a seamless fit on blued barrels, we refinish the barrel and action, see price list for refinishing charge. Knurled adapters are available on request, no extra charge.

All of our adapters and thread protectors are made from 416 stainless. 

We recently were chosen by Gemtech to handle a portion of their barrel threading work and are happy to work with Gemtech’s customer to provide any machining services required. 

Please note that the below prices are for a completely disassembled firearm.  Add $45.00 if you need Aquila to disassemble the firearm.

The following list covers the bulk of the firearms we thread.  If you don't see the specific firearm you need threaded, just ask.

Firearm Description Price
    Advantage Arms Thread 1/2 28 with adapter and thread protector $165.00
    Beretta neos 1/2 28 insert and thread protector $175.00
    Browning Buckmark 1/2 28, round thread protector, move sight back $175.00
    HK UMP and USC Thread 16.1 LH or .598 28 $135.00
    HK UMP and USC Thread .589 28 $110.00
    HK MP 5 and 94 Thread 1/2 28 $190.00
    Marlin 917 Thread 1/2 28 and thread protector $145.00
    Marlin Papoose Thread 1/2 28 and thread protector $145.00
    Most Marlin Lever actions Thread with protector, No magazine work $165.00
    Most A/R 15's Thread any American standard pitch $100.00
    Ruger Mini 14 and 30 Thread 1/2 28 and move front sight back $160.00
    Ruger Mini 14 and 30 Remover front sight and thread 1/2 28 $160.00
    Ruger MK 22 pistol Thread 1/2 28, move sight back, thread protector $175.00
    Ruger 10/22 standard barrel Machine off front sight and thread 1/2 28 w protector $145.00
    Ruger 10/22 standard barrel Thread 1/2 28, move sight back, thread protector $160.00
    Ruger 10/22 bull barrel Thread 1/2 28, thread protector $145.00
    Ruger 77/22 Thread 1/2 28 and thread protector $145.00
    Remington 700 Bull Thread American standard any pitch $100.00
    Remington 700 Bull thread Metric $135.00
    Remington 700 ADL/BDL Thread, adapter, thread protector $175.00
    Remington 700 ADL/BDL Thread, adapter, thread protector, Metric $185.00
    Remington 597 Thread 1/2 28 and thread protector $145.00
    Savage 10/12/110 Bull Thread American standard any pitch $100.00
    Savage 10/12/110 small  Thread, adapter, thread protector $145.00
    Savage 93's Thread 1/2 28 and thread protector $145.00
    Savage MKII Thread 1/2 28 and thread protector $145.00
    S&W M&P 22 Thread 1/2 28 and thread protector $145.00
  Cut and crown only $65.00
  Cut and crown when threading $35.00
  Clock or index brakes $35.00
  Pin and weld flash hiders $45.00
  Disassemble and reassemble firearm $45.00
  Refinish Barrel and action for seemless brake $140.00
  Custom thread protector $55.00




A Word On Classes of Threads

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Most mounts or flash suppressors have a 2B hole (See description below) and a 3A thread will be too tight for your can or mounts.  If you require “tight” threads, please send the mount so that we can assure it will screw on completely.

There are three established Classes of Thread, designated in the Unified series by adding “A” for screws and “B” for internal threads to show definite limits and tolerances.

Class lB, rarely used, thread is that in which a 1 A screw can be run in readily for quick and easy assembly. The hole is classified as 1 B. The fit is 1 B thread.

Class 2B thread consists of a 2A screw in a 2B hole. This 2B thread has wide application, accommodates plating, finishes, and coating to a limited extent and, therefore, has fair tolerance allowances.

Class 3B thread means a 3A Screw in a 3B threaded hole for applications where tolerance limits are close.



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Just in case you weren’t aware, a rifle barrel must be at least 16” long unless it is a registered short barreled rifle.  And, the 10/22 and AR-15 pistols can have barrels shorter than 16”.  If you are in doubt, please inquire.  Keep it legal.

Click here to review the Ordering Process for Gun Services.

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