* ATTENTION * If you already own our Universal Cartridge Adapter and would like to modify and reuse it with the Mini-Pro Lifter, please choose the Lifter Only option. For new users or those that don't want to modify their original adapter, please choose the Mini-Pro System kit, which already includes a modified adapter.
The Mini-Pro Lifter and Cartridge Arrestor System is the next step in the evolution of short-cartridge cycling capability. Taking the success of our Universal Cartridge Adapter and 590S Cartridge Arrestor Upgrade Kits to the next-level, Mini-Pro is not an adapter; it is an OEM-like solution that addresses the heart of the shotgun's functionality, where the entire factory lifter/elevator is replaced with our Mini-Pro Lifter and 590S Cartridge Arrestor System. This means you can essentially upgrade any Mossberg pump-action 12-Gauge shotgun with a 3" receiver to a true 590S-like configuration.
The Mini-Pro Lifter is constructed of hardened steel and blackened to match the factory finish. The cam profile has been optimized to accommodate minishells, and the bolt carrier rails have been polished to smooth out the action and provide a "broken-in" feel. The legs of the lifter are slightly biased in the open position to ensure plenty of residual pressure is applied to the pivot pins so they can't jump out of their respective holes if the firearm is dropped (see this video starting at minute marker 4:25 for more info: https://youtu.be/87XSOnQrCYg).
The Cartridge Arrestor is exactly the same as our 590S upgrade design and is constructed from vulcanized thermoplastic rubber. The follower is machined from solid 6061-T6 billet aluminum and is finished in a hard, safety-red anodized coating.
This system is compatible with any Mossberg 500, 590 or Maverick 88 pump-action 12-Gauge firearm with machined grooves in the receiver. Please refer to the picture or the installation video below to confirm your firearm's compatibility, but we've never seen a Mossberg pump-action firearm without these grooves.
*Please note our Universal Cartridge Adapter is forward-compatible with the Mini-Pro System with a simple modification. If you already own the Universal Cartridge Adapter and would like to reuse it, you will only need to purchase the Mini-Pro Lifter. See video for more details.
**Apply a thin coating of gun oil to all lifter surfaces prior to installation.
***The Mini-Pro Lifter, Cartridge Arrestor and Magazine Follower are optimized to function as a system, however the factory and other aftermarket followers may function as well for those that do not wish to use the follower provided.
****A short break-in period is recommended for the Mini-Pro Cartridge Arrestor, cycle 4-5 magazines of 2-3/4" cartridges thru the firearm before trying to feed 1-3/4" or 3" cartridges (can be dry-cycled if you have a safe place).
Easy to install and works like a charm! Money well spent.
Had a problem with the Mini-Pro Lifter. Defender Tactical made it right. I received very good service and they were responsive to the issue I had.
The Mini-Pro Lifter and Cartridge Arrestor System installs like the parts were straight from Mossberg. I didn’t experience the need to do any break in and found mini and 2 ¾ shells easy to load. The arrestor kept them all lined up correctly even alternating back and forth. The well machined magazine follower worked perfectly in my Maverick 88 once I melted whatever threadlocker was used on the tube with a careful application of propane and propane accessories.
Great company. I ordered a mini shell elevator. After installing the the elevator would jam the bolt in the back position.called Defender and talked to Wesley . We ran over some things to check along with lubricant. In the end he shipped me a new lifter elevator and after installing this the racking system worked. A little stiff at first but freed up after 50 racking
First off, awesome product. After installing my shockwave will feed anything I throw at it.
The only glaring issue I have is that I am having a difficult time loading 2 2/3” and 3” shells after install. I purchased the lifter only option as I already own the adapter and trimmed it down like the video demonstrated. After installing the lifter I found it was much harder to load full sized shells into the tube mag. I believe it is due to the part of the lifter that is raised, where it says “DEFENDER”. This ridge juts up slightly in front of the mag follower and shells seem to get caught on it, especially RIO shells. Interestingly, I don’t have this issue with the first shell and if I go slowly and use a good bit of force, the problem is mitigated somewhat. Other than this issue, it works flawlessly and as advertised. Good job.