Mayville Engineering Co./Mec MEC Pro Check
$10.74
The MEC Pro Check is a essential accessory for Model 600JR loader users, programming the charge bar for proper loading sequence and automatic wad guide operation.
2 in stock
The MEC Pro Check is a must-have accessory if you frequently use the Model 600JR loader. This MEC Pro Check can be attached to your charge bar using the bar-stop screw. Once attached the MEC Pro Check programs your charge bar to keep the loading cycle in the proper sequence it also facilitates automatic operation of the wad guide.
For reloaders who prefer the Model 600JR loader this MEC Pro Check is definitely a handy tool to have around. For a small price you can enjoy the benefits this MEC Pro Check has to offer it is incredibly easy to use.
| Weight | 0.150 lbs |
|---|---|
| Dimensions | 7.750 × 4.450 × 0.950 in |
| Manufacturer | Mayville Engineering Co./Mec |
| Finish | unknown |
| Weight | unknown |
| Material | unknown |
| Dimensions | unknown |
| Compatible With | Model 600JR loader |
PROCESSING & SHIPPING
Orders typically ship within 1–3 business days (Monday–Friday) after payment and all required documentation are received. Time to arrival after shipment depends on the carrier. Shipping method is at BT Gun Company’s discretion; ammunition and oversized accessories are charged at actual shipping cost. We do not ship to Hawaii or Alaska.
FIREARM TRANSFERS
- Firearms must ship to a licensed FFL dealer of your choosing — confirm with them first that they can accept the transfer.
- Your receiving FFL will need to email their license to [email protected] before we can ship.
- Inspect your firearm at your FFL’s location before signing ATF Form 4473 — once signed, the firearm is considered accepted.
You’re responsible for knowing the firearms laws in your state before ordering. For complete shipping, returns, and restocking-fee policy details, see our Shipping & Returns page.

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