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Description
FX PANTHERA MK2 .30 CAL 600MMThe FX Panthera MK2 . 30 CAL 600mm variant balances compact maneuverability and high velocity slug pushing performance. Built on the upgraded Dynamic Block platform, this mid length configuration features a tightened barrel to action interface and an over the barrel plenum system to maximize shot to shot consistency without the front heavy feel of the larger 700mm builds. Core Technical Specifications The standard factory layout for the 600mm platform
The FX Panthera MK2 .30 CAL 600mm variant balances compact maneuverability and high-velocity slug-pushing performance. Built on the upgraded Dynamic Block platform, this mid-length configuration features a tightened barrel-to-action interface and an over-the-barrel plenum system to maximize shot-to-shot consistency without the front-heavy feel of the larger 700mm builds.
Core Technical Specifications
The standard factory layout for the 600mm platform delivers standard precision metrics across multiple calibers:
- Barrel Length: 600mm standard length.
- Plenum Volume: 156cc to 163cc over-the-barrel Dynamic Plenum.
- Air Capacity: 300cc rear-mounted carbon fiber bottle.
- Maximum Fill Pressure: 250 BAR (3,625 PSI).
- Regulator System: Externally adjustable AMP MKII regulator (operating up to 170 BAR).
- Optics Mounting: Integrated 30 MOA Picatinny top rail.
- Chassis Rail: Monolithic lower Arca-Swiss and M-LOK rail featuring built-in barricade stops.
- Muzzle Thread: Standard 1/2" UNF for moderators.
- Total Weight: ~8.8 lbs (~4.0 kg) un-scoped.
Key Upgrades on the MK2 Platform
- Quick Set Trigger: The legacy trigger is replaced with a 3-in-1 adjustable system first showcased on the FX Impact M4, allowing match, hunter, or tactical configurations.
- Rigid Monolithic Rail: Features an updated, extended one-piece chassis rail with built-in slots for internal weights and threaded points to fix balancing weights.
- Enhanced Breech Tolerance: Designed with tighter block-to-barrel machining tolerances to completely eliminate point-of-impact (POI) shifts due to weather or harsh handling.
- Higher Ergonomics: Includes a redesigned rear assembly that offsets the cheekpiece upward for clearer scope sightlines and offers built-in QD sling attachment points.
Available 600mm Configurations & Calibers
- .177 Caliber: Built primarily with standard Smooth Twist X (STX) Superior liners.
- .22 Caliber: Ships with Superior Heavy STX liners Optimized for precision slugs.
- .25 Caliber: Utilizes the Superior Heavy STX system to bridge long-range pellet and hunting slug uses.
- .30 Caliber: Engineered with increased port geometry for high foot-pound energy transfer.
Tuning and Upgradability
Because the Panthera MK2 .30 cal platform shares architecture with the Dynamic and BenchMark platforms, the 600mm platform remains fully modular. Shooters looking for ultimate rigidity can swap the standard assembly for the 20mm heavy solid-steel Bull Barrel kit, which threads directly into the Dynamic Block for optimal harmonics. Converting between calibers or extending to a 700mm setup requires modular FX barrel housing sleeves, a matching length shroud, a caliber-specific probe, and brass transfer ports.
Would you like to analyze specific velocity profiles and grain weights for your preferred caliber?
Are you planning to run slugs out of this configuration? Check out our Tremor Slugs will your here.
Are you planning to run slugs out of this configuration? Check out our Tremor Slugs will your here.
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Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.3 ★★★★★
Based on 16 reviews
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Product Reviews
★★★★★ 3
PAWISE Pee Pad Holder * Big size *
Size: Small
You GUYS.....they shipped this damn thing in a 65inch TV box
Do the measurements and then think about how big a that damn tv box is....literally it arrived and my husband & kids thought 1000% I bought a new TV.
So far the product I am happy with / its a bigger square for those dancing pups. I am using this on a Chorkie puppy. The big pads fit and it latches them. Now the pup has realized he can pop the latches but he cant get the pad cause the lid is ontop . Im sure this is a puppy thing and will pass he got redirected and hasnt messed with it since.
day 2 of use. *** THANKS JEFF & employees for the huge ass waste of cardboard LOL **
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Reviewed in the United States on October 9, 2021
★★★★★ 5
Perfect for puppy!
Size: Small
I got this because I bought another (cheaper) alternative and the pads were shredded within the hour. This holder has the corners of the pad covered and that was the saving grace. Worth the extra money because you aren’t wasting money on puppy pads that are shredded before they are even used.
If your puppy is still set on shredding, make sure to add lots of toys on a rotation (never the same toys everyday) and it helps a lot. Once I did that and changed the holder, no shredded puppy pads!
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Reviewed in the United States on October 30, 2021
★★★★★ 1
Misleading size stated in adv.
Size: Small, Size: Small
Absolutely ridiculous! Says 23.5” by 23.5 “. It just barely measures a little more than 19 inches.
You have to fold up the 24” by 24” per pad to fit it. I don’t know if my 5 pound chihuahua will be able to use it. A complete waste of money!!
First photo shows it in frame - 2nd photo show what is a 24 by 24 pad.
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Reviewed in the United States on July 6, 2025
★★★★★ 5
FANTASTIC PAD HOLDER
Size: 28'' X 34'', Size: 28'' X 34''
Amazon Basics Dog Training Pad Holder 28X34.
I'll start out by saying I wasn't too sure about it, when I got it. It is awkward to put the pads in by yourself if your short as on each end the sides have to come up together and it’s big, however, I've done it five times alone now and it’s doable. There was no smell, it arrived in perfect condition. My husband was home and we set it up together, I walked into the bathroom to get a soiled pad I had keep to put on it for her to know what to do came back and she had already used it and she’s only four months old. I love it love it love it, it’s not too big, but it’s her home too, and we have it in the living room where we spend a lot of time as we’re retired. When she gets a little older, we will probably move it to another room, but for now it’s staying there. After she urinates, it goes down to a very pale yellow color I have been able to use one pad for all day, however, she does have a pad in a under bed tote in our master bathroom. We’ve had a few guests over and if she hadn’t used it they didn’t even know what it was. I highly recommend it. I have been using pads in an under the bed tote for over 10 years and this is a welcome audition. You won’t be sorry if you have little ones that go in the house.
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Reviewed in the United States on January 1, 2026
★★★★★ 5
Very easy to use and clean
Size: 22'' X 22''
Saved my pad training with my puppy. It's firm and easy to clean. It holds the pads well for the most part, but sometimes my dog gets a little crazy and it comes out, but I don't think it could be better. Still give a 5-star!
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Reviewed in the United States on May 3, 2026
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