M1903A4 Development: The U.S. Army’s Search For A Sniper Rifle

posted on September 25, 2021
Krisko M1903A4 White 2

After World War I proved the utility of scoped rifles on the modern battlefield, the U.S. Army realized that it should build off the lessons learned in the mud and blood of the trenches and begin evaluating scopes and scoped rifles for future conflicts. Fortunately, the National Archives have records of some of these tests, both those conducted during the relative peace of the interwar years and the early years of World War II, when the need for a suitable sniper rifle was more acute.

A U.S. soldier takes aim with his M1903A4 sniper rifle.

Even better, the fine folks at Archival Research Group have started the herculean task of digitizing many of these fascinating primary source records for the casual armchair historian to pore over.

The 1925 Test

A test conducted by the Army’s “Department of Experiment” at Fort Benning, Ga., in 1925 determined that a “telescopic sight should be mounted and issued on a specially accurate rifle having a specially constructed stock with high comb and less drop at the heel…” and one also featuring a longer length of pull than the standard service stock. They felt these changes were necessary to get the greatest advantage out of the scoped rifle, and to make it more comfortable for a range of shooting positions.

(Photo courtesy of Archival Research Group)

Interestingly, they singled out a weapon already in production at Springfield Armory – the NRA “sporting type” rifle – as the ideal candidate. They noted it as the most accurate of all the Model 1903 rifles (even more so than ones specially selected for the National Matches they claimed), and further stated that “it is provided with the Model 1922 stock, having exactly that high comb, small drop at the heel, and length which experience indicates will be most satisfactory with a telescopic sight.”

A Springfield Armory Model 1922, .22-Cal., rifle with Winchester A5 Scope mounted. The NRA M1903 “sporting type” rifles looked very similar, and the stock of the Model 1922 was desired. (Photo courtesy of Archival Research Group)

In the end they came down on the side of the sniper rifle, stating that “In any future war it may or may not have a decided usefulness, depending on local conditions. It is therefore felt that this instrument [rifle scope] should be developed to an ultimate successful type”.

Despite this apparent interest in fielding standardized scoped rifles, the U.S. Army allowed its peacetime sniper rifle program to atrophy into functional non-existence. Only the Marine Corps fielded any real number of scoped rifles, and unlike the more compact scopes favored by the Army, they chose to use 16" long target-style scopes produced first by Winchester and later by Lyman.

The 1942 Test

After the U.S. entry into World War II, the Army once again faced the reality that there was a need for a scoped rifle for use by snipers and other marksman on the battlefield. Unlike 1925, there was a pressing need to get an effective sniper rifle into the hands of soldiers and marines in a timely fashion. To determine what form that rifle should take, they once again embarked upon a series of tests at Fort Benning, now conducted by the Test Section of the Infantry Board. In these tests, dated Nov. 1942, they set out to settle three primary things: the rifle, the optic and the mounting location.

(Photo courtesy of Archival Research Group)

The Rifle

The first task was determining “the type of service rifle most suitable for the use of telescopic sights.” As the NRA Sporters had been discontinued, and the M1 Garand had officially supplanted the M1903 as the Army’s standard rifle, the Army test now considered three contenders: commercial style rifles, the M1903, and the M1. The Test Section received four Winchester Model 70 rifles, which came mounted with Weaver hunting style scopes. While pre-64 Model 70s are beloved and sought-after weapons today, the Army wanted nothing to do with them for simple logistical reasons (although the USMC, and eventually even the Army, would field small numbers of them).

(Photo courtesy of Archival Research Group)

In the 1942 report, they brusquely dispensed with them by stating “Manifestly, this equipment is not what is desired for the reason that the Winchester rifle is not standard and it is not desirable to add another weapon of this type to the rifle company.” Instead, they determined that both the M1903 and M1 were suitable for use by snipers due to them being “extremely accurate” and already part of the standard inventory. They did set forth certain criteria however, and stated that the rifles should be hand selected based on shot group size, and their actions be hand finished.

(Photo courtesy of Archival Research Group)

While they no longer desired the Model 1922 stocks from the NRA Sporters, they stated that “Stocks should be selected and carefully fitted” and that “In the case of the M1903, the National Match rifles with type ‘C’ stocks would be most desirable.” The “C” stocks featured a full pistol grip, instead of the original service rifle’s straight stock, and had found great favor with competition shooters during the inter-war years. As far as the rifle was concerned, the Test Section’s feelings were summed up when they said “All things should be done to insure smooth operation and greatest accuracy.”

The Optic

Now that they figured out the platform, they would have to “determine the most satisfactory type of telescope for sniping use.” In the end they would compare two scope designs: the higher magnification target style scopes used by the Marines, and the more compact but much lower magnification hunting type scopes. Alongside choosing what scope to use, they had to “determine the type of reticle to be used in the sniper’s telescope.”

(Photo courtesy of Archival Research Group)

The target type optic that was tested was a Unertl 6X magnification scope mounted on a M1903A1 rifle (the A1 basically being a standard M1903 mounted in a full pistol grip C stock). The Army testers quickly determined that the target style scope would not fit their needs, and noted two main issues that “preclude[d] its use as a ‘field service’ sight.”

First was the overall bulk and fragility of the scope, which while acceptable for the competition firing line, raised concerns about how they would hold up in harsh field conditions. Second was the size of the objective lens, and the type of mount required to attach it to a rifle. In the view of the testers this combined to force the shooter to adopt “awkward firing positions,” which were “uncomfortable, unsteady and slower” than other designs.

(Photo courtesy of Archival Research Group)

For the “hunting-type scope” however, they had high praise, calling it a “very compact, sturdy sight” which “has been used extensively by sportsmen in all climates and on all sorts of terrain.” The particular scope they used in the testing was a 2.5X magnification Weaver 330, but they noted that “prior study of other makes of hunting telescope indicates that any of the American makes of the same type would be satisfactory for sniper use,” and specifically called out Weaver, Lyman, Noske and Unertl as known suitable manufacturers.

(Photo courtesy of Archival Research Group)

The testers felt that this simple sight was rugged enough to withstand conditions in the field and, somewhat optimistically perhaps, hoped that “many inducted soldiers will already be trained in its use.” They also specially mentioned that the adopted scope should have “elevation and windage screws [with] knobs and clicks similar to the Weaver 330C,” something that would provide the shooter with tactile feedback when adjusting the scope, and allow them to make adjustments without having to closely eyeball hashmarks as they went.

(Photo courtesy of Archival Research Group)

As to the issue of reticle, the Test Section looked at three types: standard crosshair, flat top post and flat top post with a cross wire. While the report notes a preference for the crosshair type with medium thickness wires, it noted that the others would be suitable substitutes.

The Mounting Location

Finally, with the rifle and scope sorted out, the Test Section need to work out the most advantageous way to marry them together. In determined the following factors to be essential:

"(1) That due to the possibility of injury to the scope without disabling the rifle, the metallic sights must be instantly available for use with the scope mounted. (2) Mounts must be sturdy and rigid. (3) Since […] after dismounting and remounting it is necessary to make slight corrections from the former zero, the telescope should not be dismounted in the field. (4) The eye relief of the scope should be sufficient for use with high power rifles. (5) Scope should be mounted as close to the side of the barrel or receiver as the diameter of the objective lens will permit.”

(Photo courtesy of Archival Research Group)

Recognizing that even the hunting-style scopes of the day were still fairly fragile pieces of equipment, and that clip-loading was desirable (and essential on the M1), the Test Section deemed that a side mounted scope was necessary to free up the top of the rifle for aiming with iron sights and loading. They also departed from other nations’ designs by stating that instead of a detachable scope that would be stored in a protective case when not in use, the scope would be permanently fixed in a non-adjustable mount, with all windage and elevation adjustments being internal to the scope itself.

The Birth of the M1903A4 – And Some Significant Deviations from the Recommendations

Like any government acquisitions program, there will typically be some deviation from what the requesting agency asks for and what they ultimately receive. While the reasons for such differences can be legion, so often it boils down to time, simplicity, and money – which appears to be the driving factors behind what became the most common sniper rifle that was fielded to American forces in World War II and Korea.

The Rifle

The first concession to ultimately be made when actually producing the new sniper rifle was the selection of the M1903A3 instead of the M1903 or M1903A1 as the bolt-action sniper platform. While a fundamentally similar rifle, the M1903A3 was created an expedient variation to increase production speed and decrease cost during the war, and generally isn’t quite as finely fitted and finished as peace-time production M1903s. In particular it makes extensive use of stamped parts, to include the integral triggerguard and floorplate, barrel bands and sling swivels.

The Author's Remington M1903A4 sniper rifle.

The feature most notable from a distance is the substitution of a rear receiver mounted aperture sight, something that removed the need for the traditional ladder-type sight, which had its space filled with an extended hand-guard. And since M1903 production had long since ended at Springfield and Rock Island, two commercial firms had been selected to produce the M1903A3 – Remington and Smith-Corona. In the end, only Remington would be contracted to produce sniper variants, while Smith-Corona only produced the regular service rifle.

A close-up view of the barrel markings on the author's M1903A4, with "RA" for Remington Arms, ordnance bomb and Aug. 1943 production date.

Also, despite the recommendations that rifles be hand-selected for accuracy, have their actions hand finished and be carefully fitted with specially selected stocks, there is no indication that any of this was done, with Brophy noting in his seminal work “The Springfield 1903 Rifles,” “[t]he rifle was a Model 1903A3 without any special attention paid to its accuracy, or suitability for such use.”

A circled "P" firing proof cartouche at the bottom of the "scant" semi-pistol grip stock.

Additionally, while many M1903A4s were fitted with the full pistol grip "C" stocks as called for, a fair number were (like the main example photographed here from the author’s collection) were placed in the "scant" semi-pistol grip stocks. The stocks had their own interesting story of government frugality and compromise born from stock blanks cut too shallow (in the style of the original straight stocks) to accept a full “C” pistol grip.

The Optic

The scope itself generally followed the specifications dictated, with the final optic being a militarized variant of the Weaver 330C, named the M73B1 (although some standard 330Cs were fitted to the earliest rifles). Having a relatively low fixed 2.5x (some say 2.20x) magnification, and a narrow 0.75" diameter tube, it is completely archaic by today's standards both for magnification and light transmission.

Even when compared to the common foreign sniper scopes of the day, it certainly would not come in as best-of-show, but was in the end an available and economic optic. It did however prove to be somewhat fragile in field conditions, prone to moisture seepage and difficult to use in low-light situations.

A closer look at the World War II era M73B1, a militarized variant of the Weaver 330C, mounted to the author's M1903A4.

While the M73B1 would serve as the primary optic for the duration of World War II, as the service life of the M1903A4 continued, it would also occasionally mount the M81, M82 or M84 telescopes. While each was an incremental improvements over the last, they all were narrow-diameter and low-magnification optics that were generally not widely beloved.

The Mounting Location

Probably the most obvious departure from the Test Section’s recommendations was the location of the scope itself. Despite the Test Section stating that a side mounting was "necessary" because "it is imperative that the metallic sights be immediately available for use...," and that clip loading was desired, the decision was ultimately made to mount the scope in a low "scope over bore" configuration.

The mount chosen was a Redfield Jr. model, which was attached on the front via a hole drilled into the receiver and at the rear via a dovetail type base that is integral to the rifle. The mount and mounting location did present a unique problem to Remington, the solution to which still helps collectors to this day.

A close-up view of the back-rear portion of the receiver, with the back end of the Redfield Jr. mount dovetailed into what would have been the spot for the adjustable peep sight on a standard M1903A3.

Because the mount would fully obscure the standard service rifle markings, Remington chose to dramatically offset their manufacturers info and rifle model to the left side of the mount, and the serial number to the far right, in order to ensure that all were fully visible. This leaves, when the mount is removed, a large blank space smack-dab in the middle of the receiver (in addition to the mounting hole).

A modern collector can be sure they have a rifle originally configured as a M1903A4, and not a more recent “clone”, if it features this unique stamping pattern. Interestingly, Remington chose not to change the stamped nomenclature on these rifles, and all will bear factory “MODEL 03-A3” markings, although it’s not unheard of for rifles to have a hand-stamped “4”, possibly added later either during the refurbishment process, or by a diligent unit armorer seeking to square his rifles with his supply record.

A closer look at the moved receiver roll marks on the left side of the receiver.

While the scope over bore positioning did present less risk of damage when compared to the high mount, it did prevent the use of both the iron sights and clip loading. In fact, on the M1903A4 the Army decided to omit iron sights entirely, leading to the rifle becoming mostly useless if the comparatively fragile scope became damaged by rough handling or environmental conditions. One other interesting side effect of the scope position is that it interferes with the safety operation, while you can wedge the safety into a 3/4 vertical position, it if far from secure or ideal.

This Rifle

The pictured rifle was produced in 1943, with a barrel dated from August of that year. It shows a correct mix of parkerized and blued parts, as well as the “scant stock“ variant that provides a semi-pistol grip. It has a number of clear cartouches, including "RA" - Remington Arms, "FJA" - Frank J. Atwood (the inspector), an ordnance wheel, and "S.A." in a 3-sided box.

A closer look at the three main cartouches on the left side of the stock ahead of the wrist, with "RA" standing for Remington Arms, an ordnance wheel and "FJA" - Frank J. Atwood - inspector mark.

The final cartouche indicates that it was inspected / overhauled at Springfield Armory post-war, although it doesn't look like too much refurbishment was done given the condition of the stock and the metal finish being generally consistent with wartime production.

The "S.A." cartouche inside an open square on the stock, indicating a post-war rebuild at Springfield Armory.

WW2’s Best Sniper Rifle?

Was the m1903A4 the perfect sniper rifle? No, absolutely not. In fact, Colonel Brophy considered it “at best a poor excuse for a sniper rifle”. But I'd suggest that, in light of the failure to adopt a superior sniper rifle and develop a sniper training program during the inter-war years, it was a suitable response by an Army that needed to put functional scoped rifles into the hands of soldiers rapidly and in great numbers.

A U.S. soldier cleaning his M1903A4 during World War II. Note the standard M1903 rifles in the hand of the others in the background.

While entering the war with a well-developed and thoroughly tested sniper would have unquestionably been better, having this imperfect but serviceable rifle in the field during the bulk of US combat operations was certainly better than fielding the ultimate sniper system in Aug. 1945.  


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