Memorial Day Sale! 10% off all in stock items, including suppressors! Discount valid from 12:01 am MST Saturday 25 May through Monday 27 May 2024 at 11:59 pm MST! Auto-applies in checkout.

(Dealer accounts: regular tiered dealer pricing still applies with no additional discounts)
Memorial Day Sale! 10% off all in stock items, including suppressors! Discount valid from 12:01 am MST Saturday 25 May through Monday 27 May 2024 at 11:59 pm MST! Auto-applies in checkout.

(Dealer accounts: regular tiered dealer pricing still applies with no additional discounts)

Surefire Trainer & Warden Conversion – SERVICE DEPOSIT






When you complete the $10 online purchase, you are making a DEPOSIT for the conversion service;

conversion pricing is listed below.

Download our required work order here: Surefire-Trainer-Warden-Work-Order

You will need to send in your Warden or Trainer, and the balance for the service and return shipping fees will be invoiced for payment upon service completion.  Invoicing is via for Credit/Debit cards, or we can take Zelle.   We DO NOT not accept checks, cashier’s checks, money orders, Paypal/Venmo, Cashapp or any other paper or digital payment.

Lead time is approximately 2-4 weeks from the date we receive it, shipping notwithstanding.


Once you have completed the deposit and work order, ship at your convenience to:

ECCO Machine 37245 Quail Dr Elizabeth, CO 80107

Additionally, please include a note IN THE PACKAGE detailing: -Your full name -Your email address -Your return shipping address -Your phone number (text message capable preferred) -Exactly what ECCO is doing with it -Any other parts sent with it

*A detailed shipping manifest (packing list) is necessary for us to confirm that all items/parts sent are accounted for upon receipt, and to contact you immediately if we’re unable to find something that’s supposed to be in your parcel. If there is not a detailed manifest included with your items, ECCO Machine accepts no responsibility for items that are claimed to have been included but were not found.


 This is strictly a service for the Trainer or Warden YOU supply. At this time, we do not stock any trainers or Wardens, nor do we have already converted units on hand. Lead time is approximately 2-4 weeks (shipping notwithstanding) from the date we receive it in the shop.


Pricing is as follows (shipping notwithstanding):


– Surefire Warden to 1.375-24 Bravo pattern ($135.00)

– Surefire Warden to 1.4375-20 D-Cell pattern, must have Spanner Notches ($135.00)

– Steel Bodied Surefire Trainer to 1.375-24 Bravo pattern ($115.00) Note: imported bootleg trainers are NOT eligible for conversion

– Aluminum Bodied Surefire Trainer/BFD to 1.375-24 Bravo pattern ($175.00)

– Add Porting on Warden +$30.00 (2 offset rows of 10 ports; Not available with spanner wrench notches)

– Add Porting on Trainer +$70.00 (2 offset rows of 12 ports)

– Spanner Wrench Notches, no additional charge (WARDENS ONLY) Important note: Porting is not able to be done with spanner wrench notches. D-Cell pattern conversions MUST have spanner notches.

– Convert cut off Warden body or steel Trainer tube into 1.375-24 Bravo (HUB) threaded piece: +$75.00

– Moly resin finish +$25.00

***Imported bootleg Trainers do NOT have a forward register OR enough material to cut threads on, or even enough material to modify them to accept a Warden conversion piece.  They can be identified by the more squared-off aluminum collar and NO weld lines on the monolithic body.  We will NOT convert these***


Dimensional Information:

*We do not have blast chamber dimensions for all the Bravo/HUB  cans out there and cannot answer compatibility questions.  Use this information to determine compatibility for your specific application(s).

Trainer or low profile Warden conversion distance from flange to front of adapter: 1.35″

Spanner notch warden conversion distance from flange to front of adapter: 1.0″

Thread Tenon Length: .45″

Body diameter in front of threads: 1.1″

The full length Surefire brakes and flash hiders protrude .4″ from the front of a converted Warden or Trainer, so you will need to ensure that you have at least 1.8″ from the rear face of your suppressor to blast baffle tip with the low profile conversion or trainer and at least 1.45″ with the spanner notch warden conversion.  Recommended minimums are 2.0″ and 1.65″ respectively.


Additional Warden Options

For Wardens, you will need to specify if you want a low profile conversion or one with spanner wrench notches (see images).  This is for Wardens only, and we can do 1.375-24 Bravo threads or 1.4375-20 D cell threads.   Porting is NOT able to be done with the spanner wrench notch conversion.



Porting of your trainer/warden conversion may or may not be beneficial, depends on the suppressor(s) to be used with it.   Porting, which consists of 2 offset rows of 12 ports, allows venting of gas laterally before the bullet exits the muzzle device, which can promote better blast chamber efficiency when there is sufficient blast chamber.   The diameter of a converted Trainer/Warden forward of the threads is 1.1″, so if your blast chamber or adapter inside diameter is close to that, the porting really won’t serve any useful purpose and may cause difficulty with removal due to carbon deposits. Porting is NOT beneficial with our Bravo conversion of most AAC cans, as the conversion piece has a 1.115″ inside diameter.


Moly Resin Color Selection

  • SOCOM Black
  • Grey-Black Colt Flat
  • Flat Grey
  • Coyote Brown
  • Tan FDE
  • OD Green
  • Foliage Green
  • Burnt Bronze
  • Flat Brown

  *Converted Trainers/Wardens are NOT usable with our Alpha to Bravo or 1.180-24 to Bravo adapters, as the male thread minor diameters on them dictate a through-bore smaller than the 1.1″ OD forward portion of the converted Surefire mount

Conversion of Warden or Trainer tube into Bravo (HUB) threaded piece


This is an option we have added for those who wish to still use their Warden or steel bodied trainer for it’s original purpose by installing the adapter made from it or any other 1.375-24 Bravo (HUB) adapter into it. It does require a conversion piece and will have a weld line 3/4″ from the base. If the adapter made from it and the converted Warden or Trainer tube have the same threads and are to be the same color, the refinish is $25 for both parts; if they have different threads or will be different colors, the refinish is $25 each. NOTE- We may not be aware of design changes to Trainers, Wardens or BFDs that complicate or preclude converting them until we see them.   If you are unfortunate and wind up with such a species, we will advise you and you can elect to have us attempt conversion at a likely higher cost if it’s even remotely possible, or we can apply your deposit to shipping and send it back unaltered. Download the required work order HERE: Surefire Trainer-Warden Work Order

Additional information

Surefire device being converted

Warden conversion DEPOSIT, Trainer conversion DEPOSIT, BFD conversion DEPOSIT

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Surefire Trainer & Warden Conversion - SERVICE DEPOSIT
Surefire Trainer & Warden Conversion - SERVICE DEPOSIT
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