Dedicated Service Rifle scopes continue to evolve as manufacturers cater to the needs of High Power competition shooters. The latest comes from Leapers, a name synonymous with innovation and quality products. Leapers’ new Integrix iXF 4.5x28 Service Rifle scope has features High Power shooters want, and eliminates unnecessary features in order to utilize highest quality glass while keeping the cost down. (Note: American Rifleman selected the Integrix iXF 4.5x28 Service Rifle scope as 2026 Golden Bullseye Optic of the Year.)
Integrix is the newest brand from parent company Leapers, established in Michigan in 1992, which also manufactures the UTG brand.
“UTG is our oldest brand of products we make for recreational shooters, generally entry level, while expanding into making higher quality items more accessible in recent years,” Leapers Marketing Director Margaret Ding said in an email exchange. “We define our UTG PRO brand of products as a level up for those serious about training.”
All UTG products are machined in the company’s plant in Livonia, Michigan, and at its R&D center in Taiwan. The company also established UTG Europe in Germany as a European distribution center. Integrix scopes have been in development for 10 years, all its proprietary optical and mechanical design, machining, assembly and testing done in-house.
“I call Integrix breaking the barrier to high performance, and the Service Rifle scope in particular is a feat to push MSRP below $1,000 while offering this level of glass to the end consumer,” Ding said. The long and careful development of the Integrix puts it in the same class as the highest-end scopes, she said, at a much lower cost.
The Integrix iXF 4.5x28 Service Rifle scope features a 34 mm tube and high quality Japanese (Ohara) and German (Schott) optical glass that Leapers guarantees transmits 92 percent of available light, equating, of course, to excellent target clarity. NRA High Power rules permit optic magnification up to 4.5x. While other High Power-specific scopes tend to be 1-4.5x variables—and I’ve yet to see a competitor set his or her magnification below 4.5x—the Integrix is a fixed 4.5x, making manufacture less complex and therefore less costly.
In an admittedly subjective test comparing the Integrix with two other of my 30 mm High Power variable scopes set at 4.5x, the Integrix was clearly brighter than the less expensive one, and slightly brighter than the second, comparably priced scope. Note that, though a 34 mm tube technically transmits more light than a 30 mm tube, the difference is actually minimal, and so we can attribute the excellent light transmission of the Integrix to its excellent glass.
Precision Reticles
Dedicated High Power scopes typically have in common a circular or semicircular reticle of a size to surround the black scoring rings of High Power targets, which are sized approximately 6 MOA (13 inches across at 200, 19 inches at 300 and 36 inches at 600 yards). Scope reticle circles vary in inside diameter depending upon what the manufacturer believes is best or what competitors want (7 to 10 MOA in scopes I’ve examined and used). Some reticles include a dot or small cross in the center of the circle; some reticles offer illumination, some don’t.
Aligning the circular reticle on the target presents an image like that when shooting iron sights in Long-Range or Smallbore competition: the apparent ring of the front aperture sight surrounds the aiming black, with a thin ring of white target paper separating the aiming black and the ring of the aperture (see illustration). This thin white ring gives the shooter a reference indicating whether or not the target is centered for the shot. The circular reticle of the Integrix here presents an apparent 7-MOA ring surrounding the 6-MOA aiming black of the target. Integrix labels this the A4-7 reticle. After some input from top-level High Power shooters who used the scope at its Camp Perry debut in 2025, Integrix now also offers the A4-6.5 reticle with a 6.5-MOA inside diameter, making a more precise sight picture by shrinking that white ring.
Both the A4-7 and A4-6.5 reticles (which Leapers calls the “Marksman’s Aperture”) have outside diameters of 9 MOA, so the reticle of the A4-7 is 2 MOA wide and the A4-6.5 reticle is 2.5-MOA wide, offering shooters another reference on the target. The center dots of both are 0.875-MOA wide, allowing them to nestle fully inside the 1-MOA X-rings of High Power targets. Both reticles have eight steps of optional red or green illumination, an aid to accurate shooting, as black, non-illuminated center dots or crosses (or crosshairs, for that matter) can disappear into the black of the target, especially on a cloudy day.
120 MOA of Adjustment
Like most other High Power scopes, the Integrix has resettable zeros (slipping turrets). After determining your zero at your preferred distance, use a coin or screwdriver to remove the large retaining screws from the turret caps, slip the turret caps off the scope, align the “0” (zero) on the turret caps with the index marks on the tube, slip the turret caps back on and reinstall the retaining screws.
Elevation and windage adjustments of the Integrix are in 1/4-MOA clicks. Both windage and elevation have 120 MOA of travel (60 MOA left and 60 MOA right, 60 MOA up and 60 MOA down, from center) thanks to that massive 34 mm tube. One full revolution of the turrets moves bullet impact 24 MOA. Come-up from 200 yards to 600 yards is roughly 14 minutes; once zero is reset at 200 yards, it takes only a little over half a revolution of the elevation turret to dial in at 600 yards.
Parallax and Reducers
All riflescopes are manufactured to be parallax-free at only one set distance; several High Power scopes (and many others) are set to be parallax-free at 150 yards. Since parallax changes with distance and we shoot from 200, 300 and 600 yards, many scopes have a parallax adjustment. Leapers set the Integrix iXF 4.5x28 Service Rifle scope to be parallax-free at 200 yards, where we shoot our first two positions, offhand and sitting/kneeling. The Integrix has no parallax adjustment, a feature needed especially on variable power scopes that also drives up its cost.
Parallax error occurs when target, reticle and the eye are not on the same optical plane. In precision shooting, failing to keep the eye exactly centered in the ocular lens causes parallax error, and it can make the reticle appear to be centered on the X-ring when it is not. Parallax error becomes more noticeable as distance increases and when changing magnification level on a variable power scope. So, to keep the eye centered in the ocular lens (in the same plane as the target and reticle), many competitors utilize lens reducers, which essentially reduces the ocular lens to a much smaller aperture, forcing the eye to center in the lens to eliminate parallax error.
Integrix offers a choice of two optional lens reducers, clear and tinted, featuring a 0.15-inch aperture and threaded to fit the iXF 4.5x28 ocular lens. The tinted lens is not so dark that it interferes with clear vision downrange, the tinting being somewhat less than typical sunglasses, and the aperture’s apparent ring retains excellent contrast with the tinting. Lacking a parallax adjustment, purchasing the lens reducers when purchasing the Integrix iXF 4.5x28 Service Rifle scope for competition is pretty much a given.
Like all scopes, the diopter of the Integrix is adjustable so that the reticle can be focused to the individual shooter’s eyesight, and doing so is the second step prior to mounting any new scope (the first step is to read the instruction manual). For evaluation here, I mounted the Integrix to my Service Rifle utilizing a cantilever UTG PRO P.O.I. Service Rifle Mount, rated for the recoil of the .50 BMG cartridge. The Integrix scope itself is rated for .338 Lapua Magnum recoil, so the scope/mount combination is plenty beefy enough for the recoil of 5.56 mm NATO- or 7.62 mm NATO-chambered Service Rifles.
Square Shooting
The most important mechanical function of a scope intended for precision shooting competition is, logically enough, precisely repeatable windage and elevation adjustments, which we can test by “shooting the square.”
After finding my zero at 100 yards with Berger 73-grain BT Target factory ammunition, I cranked on six minutes of right windage and fired again. I then subtracted six minutes of elevation and fired, followed by putting on six minutes of left windage for another shot and then adding six minutes of elevation to put another round into the first group. For good measure, I changed elevation and windage settings in the opposite direction—going around the square counterclockwise—firing an additional shot each time, and then went clockwise and back again. The exercise produced three groups of four shots and one group of six shots with centers averaging 6¼ inches apart, indicating excellent repeatability.
Bottom Line
With the Integrix iXF 4.5x28, competitors have another option in quality High Power-specific scopes at less than the cost of a new Service Rifle. In eliminating the expense of unnecessary variable magnification and its attendant mechanical parallax adjustment found on some other High Power scopes, the Integrix invests that savings toward superior lenses and a 34 mm tube. Shooters can also choose between the 7-MOA and 6.5-MOA illuminated reticles. When we can see better, we can shoot better, and that’s the bottom line.
MSRP for the Integrix iXF 4.5x28 is $999.97. There’s more information at the Leapers website.
