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Precision DMR

Reach out and touch targets at distance

Daniel Defense DD5 V4 18"6 componentsCurrent build cost: $4,657.04Prices as of Aug 16, 2026

The Precision DMR is a designated marksman rifle built the way the role actually demands: a semi-auto .308 with an 18-inch barrel, first-focal-plane magnified glass, and a match two-stage trigger. The host is the Daniel Defense DD5 V4, and the rifle is set up to hit steel and game-sized targets from 300 to 800 yards while staying a shoulder-fired semi-auto you can run from field positions.

Every part earns its slot. The Vortex Viper PST Gen II 5-25x50 gives the reach and the reticle to use .308 ballistics, the Geissele SSA-E is the trigger the DMR role standardized on, and a QD cantilever mount, M-LOK bipod, and 20-round SR-25 PMAG round out a rifle that shoots prone off a support as well as it snaps to a barricade.

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Base platform

Daniel Defense DD5 V4 18"

$2,953.00

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Why this build

The DD5 V4 is the foundation and the reason this build works. An 18-inch cold-hammer-forged, chrome-lined .308 barrel with a rifle-length gas system and user-adjustable gas block delivers the velocity and smooth cycling a DMR needs, and DD's fit and QC give the shot-to-shot consistency that cheaper large-frame rifles struggle to hold. It feeds from SR-25 pattern magazines and wears a full-length top rail over a DD5 Rail 15.0 M-LOK handguard, so glass and support gear mount without adapters.

The Vortex Viper PST Gen II 5-25x50 is the glass that turns .308 reach into hits. The first-focal-plane EBR-7C MRAD reticle holds true at every magnification, the zero-stop elevation turret tracks and returns reliably, and 25x on the top end resolves targets well past the cartridge's practical envelope. At 5x it stays usable for closer work, which is the compromise a designated marksman accepts for real magnification when the shot stretches out.

The Geissele SSA-E is the trigger the DMR concept standardized on. A light, smooth first stage into a crisp second-stage break lets you take up the slack, settle the reticle, and break the shot without disturbing the sight picture, and its S7 tool steel construction with captive springs keeps it running in a semi-auto .308 that hammers its fire control group harder than any 5.56 carbine.

Parts list

Long-Range Scopes

Vortex Viper PST Gen II 5-25x50

$999.00 at Optics Planet · In stock

The Vortex Viper PST Gen II 5-25x50 is a first-focal-plane precision scope with the EBR-7C MRAD reticle, zero-stop tactical turrets, and side parallax adjustment. The FFP reticle subtends correctly at any power, so holdovers and wind calls work whether you are at 8x on a mover or 25x on a small plate. It is the value benchmark in serious long-range glass and the right match for what an 18-inch .308 can actually do.

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Budget swapVortex Strike Eagle 5-25x56 FFP$799.00

The Strike Eagle 5-25x56 FFP keeps the same magnification range and an FFP reticle at a much lower price, giving up some glass quality and turret feel.

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Premium swapLeupold Mark 5HD 5-25x56 PR2-MIL$2,199.99

The Leupold Mark 5HD 5-25x56 PR2-MIL is lighter with noticeably better glass and turrets, the step up when the scope should outlive several rifles.

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Scope Mounts & Rings

American Defense AD-RECON Scope Mount

$240.90 at Optics Planet · In stock

The American Defense AD-RECON is a QD cantilever mount that puts the scope at the right height and eye relief on a flat-top receiver and returns to zero when removed and reinstalled. On a rifle that travels or shares cases with other optics, a repeatable QD mount is worth having, and ADM offers it in the tube diameters and heights this class of scope needs.

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Budget swapAero Precision Ultralight 30mm Mount$98.99

The Aero Ultralight 30mm mount is a fixed one-piece cantilever that holds zero at a fraction of the weight and cost if you never remove your glass.

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Triggers & Fire Control

Geissele SSA-E Trigger

$250.00 at Optics Planet · In stock

The Geissele SSA-E is the enhanced two-stage that squad designated marksman rifles made famous: a light first-stage take-up into a crisp, icicle-clean second-stage break, machined from S7 tool steel with captive springs and no adjustment screws to walk under .308 recoil. It drops into any mil-spec large-frame lower with standard pins.

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Budget swapLaRue MBT-2S Trigger$134.99

The LaRue MBT-2S delivers a clean two-stage break at a fraction of the price and gives up little in a field-position rifle.

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Bipods

Magpul Bipod (M-LOK)

$109.20 at Optics Planet · In stock

The Magpul M-LOK bipod mounts directly to the DD5 Rail 15.0 handguard with no adapter, and its 6.8 to 10.3 inch height range with 50 degrees of cant and 40 degrees of pan covers prone and low-barricade positions. It is light enough to live on the rifle full time, which is how a DMR bipod should be run.

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Premium swapAtlas BT10 V8 Bipod$225.35

The Atlas BT10 V8 adds independent leg positions and better lockup for loading the bipod under recoil; it clamps to a Picatinny section on the handguard.

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Magazines & Feeding

Magpul PMAG 20 LR/SR GEN M3

$29.99 at Optics Planet · In stock

The Magpul PMAG 20 LR/SR is the SR-25 pattern magazine sized for the role: the 20-round body sits about an inch and a half shorter than the 25-round version, which keeps the rifle low enough to shoot prone off the bipod without jacking the position up. Same steel-reinforced feed lips and anti-tilt follower as every Gen M3 PMAG.

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AlternativeMagpul PMAG 25 LR/SR GEN M3$31.49

The PMAG 25 LR/SR adds five rounds for positional and barricade stages where prone clearance does not matter.

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Slings & Retention

Blue Force Gear Vickers Sling

$74.95 at Optics Planet · In stock

A scoped 308 with a bipod is exactly the rifle the padded Vickers exists for. The two-inch closed-cell foam pad spreads the load across the shoulder for a full day of positional work, and the Quick Adjuster loosens the sling in one motion when you drop into a loop-up for a supported sitting or kneeling shot.

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Budget swapMagpul MS1 Sling$36.75

The Magpul MS1 handles carry duty at a lower price if you can live without the pad under this much rifle.

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Current build cost $4,657.04

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Capability profile

Capability Scan

Baseline vs Configured

Frequently Asked Questions

▶Why .308 instead of 5.56 for a DMR?

A .308 DMR carries usable energy and wind performance past the point where 5.56 falls off. Heavy .308 match loads like 168 and 175 grain hold supersonic flight and drift less in wind out to 800 yards or more from an 18-inch barrel, and hit hard enough at that distance to matter. A 5.56 rifle can ring steel at those ranges with match ammunition, but the designated marksman role is about decisive hits at distance, and that is what the larger cartridge buys.

▶Why a 5-25x scope instead of an LPVO on this rifle?

A designated marksman rifle earns its keep past 300 yards, and that work needs real magnification with a first-focal-plane reticle you can hold wind and elevation with. The Vortex Viper PST Gen II 5-25x50 delivers that; a 1-6x or 1-10x LPVO is a carbine optic that trades away the top-end magnification and precise turrets this role runs on. If your rifle needs to fight up close first and reach out second, build a general-purpose carbine instead.

▶Can I build this DMR cheaper?

Yes. The scope and the host are the two big costs. Swapping the Viper PST for the Vortex Strike Eagle 5-25x56 FFP keeps the magnification and reticle capability at a much lower price, the Aero Ultralight mount replaces the QD ADM mount, and the LaRue MBT-2S stands in for the SSA-E. A budget-tier .308 AR like the Ruger SFAR or PSA Sabre-10 can host the same parts, though you give up the barrel and QC consistency that make the DD5 shoot.

▶Why a 20-round magazine instead of 25 or 30?

Prone clearance. The Magpul PMAG 20 LR/SR is short enough that the rifle sits at a natural height on the bipod when shooting prone, while the taller 25-round body can force you to raise the whole position. Capacity matters less in a precision role where you are breaking deliberate shots, so most DMR and precision AR-10 shooters run 20-rounders prone and keep 25s for positional work.

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