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MK4 iS  //  Fully programmable for ultimate shooting control

Daystate MK4 Range

Features and Specifications of the MK4 iS S & MK4 iS ST

In the world of airguns, there has never been anything quite like Daystate’s patented electronic system. Building on the ground- I breaking MK3 system, the latest Map Compensated Technology (MCT ) that’s fitted to the new MK4 iS models turns a revolutionary system into an evolutionary one, providing total shooting control from the advanced software programs that power it.

The MK4 wears the crown for being the most advanced PCP air rifle on the planet. A new information screen brings into view the state-of-the-art technology hidden inside, and also gives the shooter ultimate control via its user-programmable options.

The MCT pulse beating at the heart of the MK4 action generates a lock-time - the period between the squeeze of the trigger and the pellet’s acceleration along the barrel - that’s up to five times faster than a conventional, mechanically-driven PCP. Additionally, the shot-to-shot consistency is effectively digitally-regulated courtesy of the MCT’s sophisticated electronic monitoring system.

Whilst the phenomenally-fast firing cycle makes it easy to get outstanding down-range results, the MK4 is backed by numerous other accuracy enhancing features, from an electronically-operated, fully-adjustable two-stage trigger to a target-grade barrel that free-floats within a full-length, sound-moderating shroud. Yet despite the cutting edge technology within, the MK4 is also a stunning looker, whether you opt for it in Sports (S) or Sports Thumbhole (ST) livery. Created by top stock designer, Gary Cane and crafted in high-grade Turkish walnut by world renowned stockmaker, Minelli of Italy, the MK4 models handle as beautifully as they look.

The on-board LCD information screen of the iS models (MK4 and Air Wolf MCT) gives you an instant report on the rifle’s status, showing the cylinder’s air pressure, which of the two pre-set power settings it’s been programed with, the current shot-count, the voltage of the battery and how many shots remain in the 10-shot magazine.

Besides showing this working data, the information screen is used to set the rifle’s eight shooting modes. Using the trigger to navigate through the options, you can quickly and easily program your Daystate’s computerised operating system to ensure the rifle performs in exactly the way you want it to for any given shooting assignment.


  MK4 iS          
Overall Length:   928mm (36.5 ins)          
Barrel Length:   430 mm (17 ins)          
Cylinder Capacity   144 cc          
Weight (unscoped):   3.4 kg (7.5 lbs)          
Available Calibres:   0.177 (4.5 mm), 0.22 (5.5 mm)          
Loading:   Via bolt (electronically cocked and fired)          
Magazine:   10-Shot rotary, removable (from left or right). Also supplied with magnetic single-shot loading tray          
Fill Pressure:   Up to 230 BAR (3,335 psi)          
Hi-Power / Shots Per Charge: 0.177   150 shots @ 12 ft/lbs, 80 Shots @ 18 ft/lbs          
Hi-Power / Shots Per Charge: 0.22   180 shots @ 12 ft/lbs, 50 Shots @ 30 ft/lbs          
Trigger:   Electronic release. Adjustable for weight and length of stage          
Safety:   Manual, electronic rotary lever with key-switch isolator          
Stock:   'S' Model - Walnut sporter, 'ST' Model - Walnut thumbhole          
OPTIONS:   Carbine or Rifle length, left-hand stock, (S & ST versions), left-hand bolt, black bolt handle, sling studs, Airstream silencer.          

Mk4iS-ST owner

I've had my Daystate Mk4iS-ST in .20cal a month or so now, and have put over 1200 pellets through it, it has 'settled' down nicely and has become seriously accurate, the only limiting factor being the old guy shooting it! Being .20cal, it was a special order from the factory who turned it out in double quick time, so a big thank you to them....

Also a special thank you goes to Rachel at Daystate PR who kept me updated along the way and sorted my Boxing Clever application form out when my computer expired and I couldn't download it, I have received my Daystate hardcase now and it is very impressive...

I big thank you goes to Paul West for making me a .20 Westy Tray in polished brass, turned it round and to my door in 5 days... and at no extra cost over the 'standard' .177 or .22 trays... Great service from a british company!

I'd also like to mention my local gunshop who supplied my Mk4, an unassuming man that just got the job done, gave me the deal I wanted to trade the HW100 in and is a pleasure to know, so thank you Paul @ Kexby Field Sports, Nr Gainsborough, Lincs.

In summary the Daystate buying experience has been an enjoyable journey, I have encountered some lovely people along the way and feel confident in my purchase, I thoroughly recommend Daystate to all.

MK4 Target owner

Thankyou very much for my new Mk4, I've purchased a MTC genesis for it set up sat went to comp on Sunday and got third place out of 18

This piece of kit is absolutely amazing

Can you thank everyone who designed and built these pieces of pure excellence and art. Many many thanks

MK4 Owner

Owning a few high end PCP's (hw100 and R0 MK2) I never thought to handle a Daystate. A visit to Sportsman Gun centre in Exeter changed that! thinking either a Wolverine or MK4 may fit the bill.

One cheque later a nice shiny Mk4 came home with me.

I have finally found the accuracy I have been looking for in my PCPs. Grouping is non existent they go through the same pellet hole every time. To say I have the confidence now to try some competitions and know the misses are mine not the gun. The most accurate and best handling rifle I've owned and theres been a few in 30 yrs.

Tomorrow I'm trading the rest in for a Wolverine type C. Shame it hasn't got the MCT trigger.