Build template
See and identify in complete darkness
This is a passive-aiming night vision SBR built on the LMT MARS-L SPECWAR 12.5-inch, assembled for a shooter who runs under night vision devices and needs positive target identification in no-light conditions. A Wilcox RAID Xe handles infrared aiming and illumination, an EOTech EXPS3 rides at FAST height for heads-up passive work, and a KAC CRS-2 keeps the muzzle from blooming out the tubes.
The host matters more on a night vision gun than any other build, and it is the reason for the LMT. A laser is only as honest as the rail it is bolted to: on a conventional carbine the handguard is a separate part clamped to a barrel nut, and any shift between it and the receiver walks the infrared zero. The SPECWAR's MRP-L upper machines the receiver and the 11.5-inch rail from one aluminum forging, so the RAID Xe and the optic live on a single rigid piece of metal. The 12.5-inch mid-length barrel also keeps the suppressed package shorter than a bare 16-inch rifle, which you feel every minute you carry it in the dark.
Every part below shows its current price, and the entire configuration loads into the builder in one click. Night vision devices themselves are not part of the parts list; this build covers the rifle and the aiming, illumination, and signature-reduction gear that feeds them. The SBR and the suppressor each transfer on an ATF Form 4, currently running days to a couple of weeks with no federal tax.
Base platform
Passive aiming drives the layout. The Wilcox RAID Xe puts a co-aligned visible and near-infrared laser bench plus a variable VCSEL infrared illuminator and a fixed 40-degree room illuminator on the top rail, so you aim off the laser under goggles and light rooms without touching the main illuminator setting. The co-aligned bench holds both lasers on one zero, and ERGOCTO remote support keeps switches where your support hand already is.
The sight line is built at Unity's 2.26-inch FAST height for a reason: behind helmet-mounted tubes, an absolute co-witness optic forces your head down onto the stock, while the FAST riser brings the EXPS3 up to a heads-up position you can actually use with a device on your face. The FAST FTC 4X magnifier lives behind it on the same sight line and flips to center, stowing below the sight plane inside the receiver footprint instead of hanging off the side of the gun to snag on gear in the dark.
The KAC CRS-2 is a signature-reduction can, not just a sound suppressor: it exists to kill the flash that strobes image intensifier tubes, in a 6-inch, 15-ounce package that keeps the 12.5-inch gun compact. The SureFire M640DFT-PRO covers white-light identification when you come off the tubes, and the HRF RCM flared magwell fixes the one manipulation that falls apart under night vision: getting a fresh magazine into a well you cannot see.
Optics & Sighting

$767.99 at Optics Planet · In stock
The EOTech EXPS3 is a true holographic sight with 10 night-vision-compatible brightness settings, so the reticle stays visible and correctly dimmed behind a mounted device. Its 68 MOA ring with a 1 MOA center dot is fast up close and precise past 100 yards, and the shortened body with side buttons leaves rail space for the magnifier behind it. The parallax-free holographic reticle also helps shooters with astigmatism who see LED dots as a smear.
The Micro T-2 trades the holographic window for a 50,000-hour always-on battery and four NV settings at less weight; pair it with Unity's T-2-footprint FAST mount.
Scope Mounts & Rings

$95.00 at Optics Planet · In stock
The Unity FAST Absolute Riser lifts the EXPS3 to a 2.26-inch optical centerline, the height that keeps your head upright behind helmet-mounted night vision instead of craning down to an absolute co-witness sight line. Machined from 7075-T6 aluminum, it is the piece that turns a daytime carbine sight picture into one that works with a device on your face, and it matches the FTC 4X magnifier's height exactly.
Magnifiers

$677.00 MSRP
The Unity FAST FTC 4X is Unity's own 4x magnifier permanently married to the flip-to-center mount at the same 2.26-inch FAST height as the riser, so the EXPS3 and magnifier share one sight line. Flipped in, 4x buys positive identification at distances where a bare holographic reticle cannot; flipped away, the force-to-overcome mechanism stows it below the sight plane inside the receiver footprint, with nothing hanging off the side of the gun to snag in the dark. At 12 ounces complete it is lighter than most 3x magnifier and mount stacks.
Lasers & Aiming Aids

$3,352.52 at Optics Planet · In stock
The Wilcox RAID Xe Low Power is the aiming heart of the rifle: a co-aligned visible and near-infrared laser bench, a variable VCSEL infrared illuminator that adjusts from tight pointer to wide flood, and a separate fixed 40-degree near-infrared room illuminator for CQB. Because the optical bench is co-aligned, a daylight zero on the visible laser sets the infrared, and the OLED-backed controls and ERGOCTO remote support configure it around whatever switch layout you run. Verify the exact low-power SKU and connector before ordering.
The DBAL-A3 delivers co-aligned visible and infrared lasers plus an infrared illuminator at a fraction of the price, the proven civilian workhorse.
The B.E. Meyers MAWL-C1+ leads the commercial Class 1+ category in illumination quality with speckle-free VCSEL output and ergonomics built around the support hand.
Illumination

$358.49 at Optics Planet · In stock
The SureFire M640DFT-PRO Turbo Scout is built for identification at range, concentrating 700 lumens into 100,000 candela of throw. On a night vision rifle the white light is your transition tool for confirming a target the instant you come off goggles, and the tight Turbo beam reaches far enough to matter outdoors. It runs a rechargeable 18650 or two CR123A cells and integrates with SureFire's Scout switches, so it shares switching real estate with the RAID Xe's remote.
The PLHv2 pushes about 1,350 lumens with a 5700K emitter that cuts fog and smoke better, if you want more raw output and flood.
The mini M340DFT-PRO keeps 95,000 candela in a shorter body that tucks tighter to the SPECWAR's 11.5-inch rail.
Handguard Controls

$159.00 at Optics Planet · In stock
The Unity AXON is the switch that makes the RAID Xe and the SureFire run as one system: a dual-button remote with tactile differentiation between the flat and angled buttons, so your support-hand thumb knows laser from light without looking, in the dark, under stress. SYNC variants fire the laser alone off one button and light plus laser together off the other. Order the RAID Xe-specific plug variant Unity introduced in 2026 rather than adapting a generic CRANE lead; the dedicated connector is the clean way onto the Wilcox's remote port.
Muzzle Devices

$136.80 MSRP
The KAC 5.56 QDC Flash Eliminator is the required bridge between the SPECWAR's 1/2x28 barrel threads and the CRS-2. Its three-prong flash-hider geometry controls visible flash when the suppressor is off, while the QDC mounting surface gives the CRS-2 and MCQ-2 their native tool-free lockup. Selecting the KAC muzzle device explicitly keeps the suppressor path inside one verified ecosystem.
Suppressors

$1,425.00 MSRP
The KAC CRS-2 is a signature-reduction suppressor, which is the correct spec for a night vision gun: its job is killing the muzzle flash that blooms image intensifier tubes, and it does that in a 6-inch, 15-ounce package that brings a 143 dBA at-the-muzzle report on 5.56. It mounts on KAC's QDC system over a 1/2x28 flash hider, so it comes on and off the SPECWAR without tools and returns to zero.
The MCQ-2 is KAC's mini can at 4.5 inches and 12.7 ounces, giving up some suppression for the shortest possible package.
Accessories

$50.00 MSRP
The HRF Concepts RCM flares the magwell opening with roughly 175 percent more funnel surface, and it earns its slot on this rifle specifically because reloading under night vision happens entirely by feel: helmet-mounted tubes have no useful depth perception at arm's length. HRF molds receiver-specific fits rather than a universal wedge; order the LMT MARS-L variant for this host.
Magazines & Feeding

$13.95 MSRP
The Magpul PMAG 30 Gen M3 is the default for a reason: a four-way anti-tilt follower, constant-curve geometry, and crush-resistant polymer that survives hard use. It feeds reliably across conditions and is cheap enough to buy in quantity.
The SureFeed E2 is an aluminum-body magazine from the original USGI maker, with enhanced feed lips that hold shape under long-term loaded storage.
Slings & Retention

$58.00 MSRP
The Ferro Concepts Slingster is the sling you see on night vision guns for a reason: the rubberized pull tab adjusts silently and positively with gloves on, and the movable pad slides to wherever the load actually sits under a plate carrier. At roughly 3.5 ounces it adds almost nothing to a rifle already carrying a laser, a light, and a can.
The Blue Force Gear Vickers Padded carries this much hanging weight just as well with a fixed inline pad.
Current build cost $9,795.75
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