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June 3rd, 2026

Scopes for Service Rifles — Requirements and Popular Optics

sightron service rifle scope optic 4.5x24mm

In Service Rifle competition in the United States, scopes are currently limited to a maximum magnification of 4.5 power (4.5X). Both the NRA and CMP rulebooks stipulate that variable and fixed scopes cannot exceed this power, and the objective lens diameter must not exceed 34mm.

nightforce service rifle scope optic 4.5x24mm

Service Rifle Scope Configuration Rules

Maximum Magnification: 4.5x power is the max magnification allowed for Service Rifles.

Variable Power Limit: If using a variable scope, it can have any magnification range as long as it cannot be dialed higher than 4.5X.

Lens Size: 34mm is the maximum allowed objective lens diameter.

Sight Consistency: The same optical sight must be used for all stages of a course of fire. Changing optics between slow-fire and rapid-fire strings is prohibited.

Mount Height: The scope centerline must be no higher than 3.5 inches above the barrel bore centerline.

Popular Service Rifle Optics

Because of the 4.5X power limit and 34mm max objective size, Service Rifle competitors typically run purpose-built AR-optimized service rifle optics or tactical low-power variable optics (LPVOs). The most popular service rifle optics include:

Sightron S-TAC 1-4.5X24mm SR-1/AR-1 Scope

sightron service rifle scope

Nightforce Competition SR Fixed 4.5x24mm

nightforce service rifle scope optic 4.5x24mm

Leupold VX-4.5HD Service Rifle 1-4.5x24mm CDS-ZL2 HPR-1

leupold service rifle scope

junior service rifle camp perry

Permalink - Articles, Gear Review, Optics No Comments »
June 20th, 2016

New Nightforce Competition SR 4.5x24mm Service Rifle Scope

Nightforce Service Rifle Scope Competition 4.5x24mm SR

Nightforce has released an all-new 4.5x24mm scope for Service Rifle Competition. Nightforce’s new Competition SR Fixed 4.5x24mm riflescope is purpose-built for the CMP’s new Service Rifle rules that allow scopes with max 4.5X magnification, and max objective lens diameter of 34mm. Nightforce made this new scope quite light in weight (just 15.4 ounces), recognizing that Service Rifles will now be limited to 11.5 pounds for optic and gun combined. MSRP is $1950.00.

FIELD TEST COMING — Accurateshooter.com will get one of these new 4.5x24mm Nightforce scopes for evaluation soon. We will provide a complete field test, and our tester Dennis Santiago will use the new scope in actual Service Rifle competition.

The new NF Competition SR 4.5x24mm scope provides 100 MOA of both elevation and windage adjustment, with .25 MOA clicks and 20 MOA per revolution. Parallax is fixed at 200 yards. The main tube is 30mm. This scope features a handy ZeroStop on the elevation knob that allows instant, positive return to the shooter’s chosen zero setting.

Photo shows Nightforce’s new, lightweight Unimount. Half the weight of a similar steel unit, this alloy mount offers +20 MOA taper.
Nightforce Service Rifle Scope Competition 4.5x24mm SR

The new non-illuminated SR-1 reticle features heavy posts at the 3, 6 and 9 o’clock positions, and a 10 MOA center circle with 8 MOA crosshair. The Competition SR Fixed 4.5x24mm will retail at $1950.00 and the UnimountTM SR will retail at $260.00.

Product tip by EdLongrange. We welcome reader submissions.
Permalink New Product, Optics 24 Comments »