7.5 FK and the FK Brno PSD (Page 1 of 3)
Posted: 7/29/2026 3:00:53 PM EDT
[Last Edit: 74novaman][Edited]
I'll be completely honest to start the thread: My goal here is to get enough people hyped and interested in both this cartridge and the FK Brno pistols that they continue to sell well enough in the US that I have continue to have access to parts/ammo/support, because I am really loving both the PSD pistol and the 7.5 FK round.  I will try to continue to update this thread as I do more shooting with the gun. I'll start with some chrono numbers. 9mm 124gr Federal HST from a 4.5" Glock= 1200 fps, 397 ft.lbf 5.7 40gr Hornady Vmax from a 10.4" PS90= 2150 fps, 411 ft.lbf 7.5 FK 101gr F9 Flatnose from a 5.3" PSD= 1838fps, 758 ft.lbf Left to right: 5.7x28mm, 9mm, 7.5 FK  7.5 FK 95gr F5 Hollowpoint from a 5.3" PSD= 1879fps, 745 ft.lbf 10mm 175gr Hornady CD Flexlock from a 5.3" PSD= 1129fps, 495 ft.lbf So a 10mm load gives you about ~100 ft.lbf more energy than a really solid, well regarded 9mm defensive load, and the 7.5 FK hollowpoint gives you another ~250 ft.lbf of energy over the 10mm. Energy isn't the end all/be all, but throwing 101gr solid copper round at 1800 fps certainly has potential. So the round is neat, but what about the gun? Yall might remember the FK Brno Field Pistol that got hyped a few years ago and was a $10,000 pistol. Ouch. Thankfully, they decided to make a gun that might actually sell, and built a polymer framed version called the PSD that comes optics ready. It retails at Italian Firearms Group for around $1,500. It's not a lightweight pistol, and mine is 2 lbs, 15 oz with a light and red dot empty. For reference, my CZ Shadow 2 without a light or dot weighs 2 lbs, 13 oz empty. So its heavy for a polymer gun, but its not a complete boat anchor either.  The weirdly thicc (two cs) front end houses a unique recoil system developed for the 7.5 FK that uses a tungsten weight in addition to the recoil spring. The 10mm barrel also uses the same recoil spring and weight and makes 10mm pretty pleasant to shoot and 40 s&w feel like 9mm.   They also make a 9mm conversion for it, but it requires a different recoil spring and I have a ton of good 9mms already. I was only interested in shooting 7.5 FK, 10mm and 40 s&w from this gun. The swap from 7.5 FK to 10mm takes 20 seconds to swap barrels. Everything else stays the same, including magazines. The magazines hold 16 rounds of 7.5 FK, but only 10 rounds of 10mm. Time for my first negative comment about the gun: 40 s&w fits in the magazine...sort of. I could only load between 8-10 rounds per mag in the 4 magazines I tried. I assume because of how short the round is, they can get stacked up weird in the magazine. Despite my issues loading them, it fed and ejected 40 s&w with zero issues. Will report back if that changes. They also make a stock for the gun, and the round is expressly designed to be effective at distances beyond a normal pistol shot if a pistol/pdw is your kind of thing. I already SBRd mine and will report back with how it is to shoot with the stock after the stamp clears.  The early guns had some issues with light primer strikes, but the newer ones apparently have slightly longer firing pins, and I've shot a little over 150 rounds through the gun, 1/3 of that 7.5 FK, 1/3 10mm and 1/3 40 s&w. I have had zero failures so far (I fully acknowledge how pathetically low that round count is to call it reliable or not, but I've only had the gun for a couple weeks so I'm working on it). 7.5 FK will thump you pretty good, 10mm recoil isn't bad at all, and recoil shooting 40 s&w feels like shooting a 9mm, its very light. https://italianfirearmsgroup.com/fk-brno/ is the importer, and if you are interested in high power handgun stuff or just want a unique 10mm handgun, I really think the PSD is worth a look. There's even a company making ammo stateside now: https://tascosamachine.com/ Please help me keep them in business and importing 7.5 FK ammo. Thank you. |
Originally Posted By Aimless: You're calling each other names at 8 on a sunday in a thread about ancient rome. smiley_freak.gif
|
Originally Posted By Capt-Planet: An MP5K-PDW sized little blaster would be awesome in 7.5. I don't get the idea of it in a pistol. To me it almost makes more sense in a pistol. Going up to MP5 size and I can have a Rattler. |
BikerNut:
Normal people like motorcycles. Real people like motorcycles.
People who don't like motorcycles are just... weird.
Normal people like motorcycles. Real people like motorcycles.
People who don't like motorcycles are just... weird.
| These guns are very interesting to me. Ammo cost is a big hurdle. I picked up a 22TCM to mess with because am was 40¢ a round for a while and would drop down lower on sale. |
BikerNut:
Normal people like motorcycles. Real people like motorcycles.
People who don't like motorcycles are just... weird.
Normal people like motorcycles. Real people like motorcycles.
People who don't like motorcycles are just... weird.
Big girls make all your dreams come true!
Joined:
Dec 2001
Posts:
62672
EE: 100% (4)
WV, USA
Joined:
Sep 2022
Posts:
3145
EE: 0% (0)
USA
|
Originally Posted By Bravo_Six: Neat gun and round. How is the trigger feel? On par with the single action from a CZ. Its not custom 1911 good, but its a nice trigger. |
Originally Posted By Aimless: You're calling each other names at 8 on a sunday in a thread about ancient rome. smiley_freak.gif
|
Originally Posted By R2point0: So what you are saying is there is another frame that could be converted to 7.62x25? Sure, if you want to shoot an objectively inferior round, you do you boo. |
Originally Posted By Aimless: You're calling each other names at 8 on a sunday in a thread about ancient rome. smiley_freak.gif
|
Originally Posted By Stonia: I am a little uneasy about future parts availability with there being a single importer and low volume sales. Hence the thread. Yall go buy some too so they keep importing stuff. It's CZ based, I suspect a decent smith or CZ shop could figure out a way to fix most stuff that might break. But for now, not a worry. |
Originally Posted By Aimless: You're calling each other names at 8 on a sunday in a thread about ancient rome. smiley_freak.gif
|
Originally Posted By colklink: Not interested in that pistol, but would like a lightweight bolt action pack rifle. Maybe with a 5 round internal magazine, maybe the ability to use stripper clips. That would be cool, the pdw people mentioned would be cool. All for anything that makes the round more widespread/common. |
Originally Posted By Aimless: You're calling each other names at 8 on a sunday in a thread about ancient rome. smiley_freak.gif
|
Originally Posted By Capt-Planet: An MP5K-PDW sized little blaster would be awesome in 7.5. I don't get the idea of it in a pistol. The fact that you can shoot a round that still penetrates lvl3 soft armor at 100 yards from a pistol is part of the whole reason it exists. But I agree a PDW would be great. Stribog already makes a 10mm roller delayed PCC, it would be amazing if they could spin up a 7.5 barrel/mags for it. |
Originally Posted By Aimless: You're calling each other names at 8 on a sunday in a thread about ancient rome. smiley_freak.gif
|
Originally Posted By 74novaman: Sure, if you want to shoot an objectively inferior round, you do you boo. I also shoot .22 instead of .17 Hornady H2. |
"As God is my witness, I thought turkeys could fly." A. Carlson
|
Originally Posted By R2point0: An inferior round I have many thousands of, is more available, and in which I have other firearms chambered. I also shoot .22 instead of .17 Hornady H2. Sounds like this isnt the thread for you then. 
|
Originally Posted By Aimless: You're calling each other names at 8 on a sunday in a thread about ancient rome. smiley_freak.gif
|
Originally Posted By 74novaman: Sounds like this isnt the thread for you then. I wasn't pooh-pooing the 7.5, I'm just more interested in the pistol. |
"As God is my witness, I thought turkeys could fly." A. Carlson
Member
Joined:
Jun 2022
Posts:
14206
EE: 100% (31)
TX, USA
|
Originally Posted By ALASKANFIRE: These guns are very interesting to me. Ammo cost is a big hurdle. I picked up a 22TCM to mess with because am was 40¢ a round for a while and would drop down lower on sale. I have a couple 22TCMs and picked up a couple thousand rounds of ammo a year or so ago when it dropped down to around 25 or so cents per round. Every time I check the price on it I wish I’d bought a lot more. |
“That’s not how it works. You buy more tools and power than you need and as you fuck everything up you gain the knowledge to become a better carpenter.”
Tveddy
Tveddy
|
Originally Posted By backbencher: What's the fastest load you can get out of that thing, OP? Fastest factory load is the F5 95gr hollowpoint at 1880fps. I dont reload so I dont know what its capable of on that front. |
Originally Posted By Aimless: You're calling each other names at 8 on a sunday in a thread about ancient rome. smiley_freak.gif
Big girls make all your dreams come true!
Joined:
Dec 2001
Posts:
62678
EE: 100% (4)
WV, USA
|
Originally Posted By 74novaman: That would be cool, the pdw people mentioned would be cool. All for anything that makes the round more widespread/common. Someone made a 5.7 backpack rifle, only a single shot. I would want a repeater. |
I've met cats and dogs smarter than Cory and Trevor.
|
I love the cartridge idea and am glad to see they pulled their heads out of their asses long enough to make an affordable pistol for it. (This is the first I heard of the plastic frame version) I couldn't figure out what they were thinking when their product was just the $10k pistol and its special ammo. |
|
Originally Posted By Curmudgeon762: I have a couple 22TCMs and picked up a couple thousand rounds of ammo a year or so ago when it dropped down to around 25 or so cents per round. Every time I check the price on it I wish I’d bought a lot more. Originally Posted By Curmudgeon762: Originally Posted By ALASKANFIRE: These guns are very interesting to me. Ammo cost is a big hurdle. I picked up a 22TCM to mess with because am was 40¢ a round for a while and would drop down lower on sale. I have a couple 22TCMs and picked up a couple thousand rounds of ammo a year or so ago when it dropped down to around 25 or so cents per round. Every time I check the price on it I wish I’d bought a lot more. Yup except I didn’t stack that deep. Worst part is I knew at the time it was a great deal. Loaded ammo close to 9mm cost. |
BikerNut:
Normal people like motorcycles. Real people like motorcycles.
People who don't like motorcycles are just... weird.
Normal people like motorcycles. Real people like motorcycles.
People who don't like motorcycles are just... weird.
|
Originally Posted By mechanical: I love the cartridge idea and am glad to see they pulled their heads out of their asses long enough to make an affordable pistol for it. (This is the first I heard of the plastic frame version) Glad you learned something new! It is a cartridge that deserves more development for sure. |
Originally Posted By Aimless: You're calling each other names at 8 on a sunday in a thread about ancient rome. smiley_freak.gif
|
I had the absolute pleasure of zeroing two of these in for a good friend year before last. It’s a really cool gun that I would *love* to have someday. Very misunderstood and underrated in build quality and performance. For those that don’t know, these match slug weight and velocity of a short barreled AK in a large format handgun footprint. The beautifully machined stock sucks to use though, no matter how much I wish it didn’t. |
Never make another person a priority when they merely see you as an option...
"Some People Are Like Slinkies. They're Not Really Good For Anything, But They Bring a Smile To Your Face When Pushed Down The Stairs."
"Some People Are Like Slinkies. They're Not Really Good For Anything, But They Bring a Smile To Your Face When Pushed Down The Stairs."
|
Originally Posted By 74novaman: Glad you learned something new! It is a cartridge that deserves more development for sure. It would be the ultimate PCC cartridge. |
Never make another person a priority when they merely see you as an option...
"Some People Are Like Slinkies. They're Not Really Good For Anything, But They Bring a Smile To Your Face When Pushed Down The Stairs."
"Some People Are Like Slinkies. They're Not Really Good For Anything, But They Bring a Smile To Your Face When Pushed Down The Stairs."
|
Originally Posted By R2point0: Quite the contrary. I always have best wishes for new guns and new cartridges. I wasn't pooh-pooing the 7.5, I'm just more interested in the pistol. Old school deeeeep bluing and a slide that feels like piled glass on the frame rails…. |
Never make another person a priority when they merely see you as an option...
"Some People Are Like Slinkies. They're Not Really Good For Anything, But They Bring a Smile To Your Face When Pushed Down The Stairs."
"Some People Are Like Slinkies. They're Not Really Good For Anything, But They Bring a Smile To Your Face When Pushed Down The Stairs."
|
I had a PSD that would only function with its 10mm barrel installed. With the 7.5FK barrel it was a jammomatic piece of shit. And IFG never responded to my requests for assistance. ETA it’s a known issue with the PSDs and I don’t think there’s a fix. Something about the breech face being mis-machined. |
|
Originally Posted By ALASKANFIRE: Yup except I didn’t stack that deep. Worst part is I knew at the time it was a great deal. Loaded ammo close to 9mm cost. I’m in this boat with the 9R variant. I remember when the Brno pistol came out and thought it was a cool idea, but it was cost prohibitive for me. Neat round though. |
Knight of Blunder - Fogo '21
|
Originally Posted By 74novaman: Fastest factory load is the F5 95gr hollowpoint at 1880fps. I dont reload so I dont know what its capable of on that front. Originally Posted By 74novaman: Originally Posted By backbencher: What's the fastest load you can get out of that thing, OP? Fastest factory load is the F5 95gr hollowpoint at 1880fps. I dont reload so I dont know what its capable of on that front. I bet you could clear 2000 fps w/ a 71 grn .32 ACP bullet. |
|
Originally Posted By backbencher: I bet you could clear 2000 fps w/ a 71 grn .32 ACP bullet. Might require a specific propellant-I have been playing with the 68gr underwood bullets and I get 1740 out of a threaded g19 barrel and barely 50fps faster out of a 7.5” tube… the powder is just too fast. |
Never make another person a priority when they merely see you as an option...
"Some People Are Like Slinkies. They're Not Really Good For Anything, But They Bring a Smile To Your Face When Pushed Down The Stairs."
"Some People Are Like Slinkies. They're Not Really Good For Anything, But They Bring a Smile To Your Face When Pushed Down The Stairs."
|
Originally Posted By TheOtherDave: It would be the ultimate PCC cartridge. Originally Posted By TheOtherDave: Originally Posted By 74novaman: Glad you learned something new! It is a cartridge that deserves more development for sure. It would be the ultimate PCC cartridge. Or you could use a short barrel AK / .300blk AR to get the same ballistics at a fraction of the cost. |
|
Originally Posted By Bravo_Six: Or you could use a short barrel AK / .300blk AR to get the same ballistics at a fraction of the cost. But then you are concealing an AK, dealing with AK recoil, AK muzzle blast, and a lot more weight. You can holster one of these… it’s the same with a USW-A1, it’s a carbine in your hip that bridges CQB out to 120-150 yards on human targets … you can face shoot someone that needs it by just putting the dot in the top of their head. Not many personal defense shots are farther than that, it wouldn’t be worth it to carry a Krinkov or 10” supersonic .300blk. |
Never make another person a priority when they merely see you as an option...
"Some People Are Like Slinkies. They're Not Really Good For Anything, But They Bring a Smile To Your Face When Pushed Down The Stairs."
"Some People Are Like Slinkies. They're Not Really Good For Anything, But They Bring a Smile To Your Face When Pushed Down The Stairs."
|
Originally Posted By Bravo_Six: Or you could use a short barrel AK / .300blk AR to get the same ballistics at a fraction of the cost. .300 BLK is significantly better than 5.56 muzzle blast but it's still not a pistol cartridge. The smallest, most modern 300 BLK PDW (Rattler) is close, but not quite, to peak 1970s pistol caliber PDW (MP5K) in terms of size. I think this 7.5 could help be the bridge. |
Remember kids, the first rule of gun safety is to have fun.
I am Government Man, come from the government.
Joined:
Jan 2013
Posts:
27909
EE: 100% (18)
PA, USA
|
Originally Posted By TheOtherDave: But then you are concealing an AK, dealing with AK recoil, AK muzzle blast, and a lot more weight. You can holster one of these… it’s the same with a USW-A1, it’s a carbine in your hip that bridges CQB out to 120-150 yards on human targets … you can face shoot someone that needs it by just putting the dot in the top of their head. Not many personal defense shots are farther than that, it wouldn’t be worth it to carry a Krinkov or 10” supersonic .300blk. Sorry. I misunderstood what you meant by "PCC". I was picturing an MP5 type gun, not one of those little PDW type things. |
|
Originally Posted By Bravo_Six: I think the steel frame version is $7,500. Attached File |
|
Originally Posted By Bravo_Six: I think the steel frame version is $7,500. Originally Posted By Bravo_Six: Originally Posted By BullpupFan: If the plastic version is $1500, WTF is the metal version $10,500???? I always liked the looks of the Field Pistol but PSD = Plain and Simply Drab. I think the steel frame version is $7,500. Steel MSRP $10,485 Plastic MSRP $1,495 |
|
Originally Posted By BullpupFan: Originally Posted By Bravo_Six: Originally Posted By BullpupFan: If the plastic version is $1500, WTF is the metal version $10,500???? I always liked the looks of the Field Pistol but PSD = Plain and Simply Drab. I think the steel frame version is $7,500. Steel MSRP $10,485 Plastic MSRP $1,495 There's one listing for under $8k on Gunbroker, and several in the $8200 range. |
|
Originally Posted By CleverNickname: There's one listing for under $8k on Gunbroker, and several in the $8200 range. Originally Posted By CleverNickname: Originally Posted By BullpupFan: Originally Posted By Bravo_Six: Originally Posted By BullpupFan: If the plastic version is $1500, WTF is the metal version $10,500???? I always liked the looks of the Field Pistol but PSD = Plain and Simply Drab. I think the steel frame version is $7,500. Steel MSRP $10,485 Plastic MSRP $1,495 There's one listing for under $8k on Gunbroker, and several in the $8200 range. That's fair, but the point is why would MSRP be 7X higher for steel vs plastic? or even 5X higher? (assuming the plastic one sells at MSRP and the steel one is discounted as you note) Steel at double plastic - maybe. Steel at 5-7X plastic seems ridiculous! |
I'm not lazy, I just really enjoy doing nothing.
Joined:
Mar 2019
Posts:
15167
EE: 100% (17)
USA
| This sent me down a rabbit hole.. |
I can explain it to you but I can't understand it for you.
|
Originally Posted By ALASKANFIRE: Will it work in a 1911/2011 and will this feed out of 1911/2011 10mm mags? No, too long. 5.7x28mm is a 100 yd personal defense cartridge in a pistol as well. As is .22 TCM, likely. 7.5 FK is a hundred yard deer cartridge, I'll grant. |
|
Originally Posted By TheOtherDave: I had the absolute pleasure of zeroing two of these in for a good friend year before last. It’s a really cool gun that I would *love* to have someday. Very misunderstood and underrated in build quality and performance. For those that don’t know, these match slug weight and velocity of a short barreled AK in a large format handgun footprint. The beautifully machined stock sucks to use though, no matter how much I wish it didn’t. @TheOtherDave What 7.62x39 ammo are you referencing? I have a 7” 7.62x39 AR upper and here’s what I’ve gotten with run of the mill steel cased 124gr FMJ, which is 23gr heavier than the 101gr solid copper offering in 7.5 Wolf Military Classic 124gr FMJ 28rd group Lo: 1889 Hi: 1975 Avg: 1934 ES: 86 SD: 23.7 I have 5.45 Krinks, but no Draco or other 10ish inch barreled 7.62x39 AK. I presume they’d pick up a little more velocity compared to my 7” upper. I think 7.5 and this pistol are cool, as is 22 TCM and light/fast 9mm, but I don’t think the statement that the 7.5 is matching slug weight and velocity of a short barreled AK is accurate. |