Potomac Armory
Mk13 Mod 7 Sniper Rifle AICS .300 Win Mag Accuracy International with Deployment case
$15,560.00
Mk13 Mod 7 Sniper Rifle — Built by the Original Designer, Chris Higgins of NSWC Crane
This is the rifle that defined Naval Special Warfare precision operations. The Mk13 Mod 7, designed by Chris Higgins at Naval Surface Warfare Center (NSWC) Crane, became the standard sniper platform for SEAL Team Six and is documented in the operational history of some of the most consequential direct action and hostage rescue missions in modern military history. This is not a replica or a tribute build — this rifle is assembled by the original designer himself, making it a once-in-a-lifetime acquisition for serious collectors and operators.
The Designer's Own Rifle
Chris Higgins literally engineered the Mod 7 specification at NSWC Crane — the Navy's primary weapons development center. His design work transformed the Accuracy International platform into the Navy's primary designated precision sniper rifle. CCC partnered with Potomac Armory and Red Bull Armory to commission Chris Higgins to build this example using the exact specifications and methodology he established during his tenure developing the original military specification. This is not a commercial variant or an approximation — it is the designer's authentic build of his own military-grade design, executed with the same uncompromising attention to detail that made the Mk13 Mod 7 the choice of elite Naval Special Warfare operators.
Operational Pedigree and Legacy
The Mk13 Mod 7 is inseparable from SEAL Team Six's operational history. This rifle system appears in publicly documented accounts of precision engagements across multiple theaters, and it carries the combination of .300 Winchester Magnum ballistics and Accuracy International mechanical precision that proved decisively superior in the operational environments where elite Naval Special Warfare units work. The Mod 7's design represented a shift in NSW philosophy — moving to a platform that offered rapid follow-up capability while maintaining the accuracy standards required for high-value target precision operations at extended ranges.
Technical Excellence and Clone Correctness
The rifle is built on the Accuracy International AICS stock system — the standard for AI rifles since its introduction and the mechanical foundation that made Accuracy International the platform of choice across multiple NATO special operations commands. Chambered in .300 Winchester Magnum, it delivers the ballistic performance required for extended-range engagements. Every detail — from the trigger specifications to the scope mount interface — reflects Chris Higgins' original design intent. Among civilian Mk13 Mod 7 representations, this stands alone: it was built by the man who designed it.
This build follows the NSWC Crane Mod 7 drawing package. Each component below reflects the actual specification, not an approximation. This list is provided as a reference for collectors, builders, and researchers — the same format used by the mil-clone community to document authenticated configurations.
| Component | Specification | Notes |
|---|---|---|
| Action | Stiller Tac 300 | Remington 700 footprint; specified by Crane for the Mod 7 |
| Chassis / Stock | Accuracy International AICS | Folding stock, multi-adjustable; NATO standard for AI platform |
| Barrel | Schneider Match Grade, 26" | Heavy profile; threaded for AAC suppressor interface |
| Caliber | .300 Winchester Magnum | Supersonic to 1,200+ meters; selected over .308 for range |
| Muzzle Device | AAC Cyclone-Pattern Muzzle Brake | QD suppressor-mount compatible; Crane-specified interface |
| Trigger | TriggerTech Rem 700 Compatible | Frictionless release; 2–3 lb pull per Crane spec |
| Optic | Nightforce NXS 5.5–22×56 or ATACR 5–25×56 | MOAR or Mil-R reticle; both used operationally on the Mod 7 |
| Scope Mount | Nightforce Unimount or Spuhr SP-3602 | 20 MOA cant; Picatinny rail interface |
| Bipod | Harris S-BRM (9–13") | Sling swivel stud mount; standard NSW issue bipod |
| Suppressor (optional) | AAC (762-SDN-6 or Cyclone) | Deployed with suppressor; QD interface matches Crane spec |
| Magazine | Accuracy International 10-round .300 WM | Detachable box; AI proprietary feed system |
| Sling | Vickers Combat Applications Sling | 1.25" rapid-adjust; standard NSW sniper kit |
Chris Kyle primarily used the earlier Mk13 Mod 5 during his deployments to Iraq, which he described in American Sniper. The Mod 5 was the Accuracy International AW in .300 Win Mag that Kyle credited with many of his long-range engagements. The Mod 7 is the later, updated iteration developed at NSWC Crane — it superseded the Mod 5 with an improved AICS chassis, Stiller action, and Schneider barrel, but came after Kyle's active deployments. The Mod 7 became the primary platform for SEAL Team Six and MARSOC in the post-2010 era.
.308 Winchester (7.62×51 NATO) goes transonic — losing stability — around 800–900 meters. In the complex terrain of Afghanistan and Iraq, NSW snipers needed reliable first-round hits past 1,000 meters. The .300 Winchester Magnum stays supersonic past 1,200 meters, carries more energy at range, and bucks wind better than .308. It's a more demanding cartridge to shoot and supply, but the SEAL community accepted the logistics tradeoff for the performance margin in the environments where they operate.
The Mk13 Mod 7 has a confirmed effective range of 1,200+ meters for precision engagements. The .300 Win Mag cartridge from a 26" match barrel remains supersonic past 1,400 meters under standard conditions. Real-world shots in Afghanistan have been documented beyond 1,500 meters with this platform. The combination of the Schneider barrel's consistency, Nightforce optics, and the Stiller action's tight tolerances produces sub-MOA accuracy that the military specification requires.
The Mk13 Mod 7 was developed by Chris Higgins at Naval Surface Warfare Center (NSWC) Crane, Indiana — the Navy's primary small arms and special operations equipment development center. The rifle is not manufactured by a single company in the commercial sense; instead, it is built to a Crane-issued drawing package using components from Accuracy International (chassis), Schneider (barrel), Stiller (action), and other vendors. CCC is the only civilian source offering Mod 7 builds assembled by Chris Higgins himself, using the original Crane specification.
The Mod 5 is the original Accuracy International AW variant that entered NSW service — a more traditional stock configuration with a Pac-Nor barrel. The Mod 7 represents a significant update: it moves to the AI AICS folding chassis (better transport, faster deployment), uses a Stiller Tac 300 action for tighter tolerances, specifies a Schneider match barrel, and standardizes the AAC Cyclone-pattern muzzle brake for QD suppressor use. The Mod 7 also incorporates updated optic rail specifications compatible with larger Nightforce ATACR objective lenses. Both fire .300 Win Mag; the Mod 7 is simply the more refined, modern implementation.
The Mk13 Mod 7 uses Nightforce optics — primarily the NXS 5.5–22×56 (the long-service standard) and in more recent configurations the ATACR 5–25×56 F1. Both are used with MOAR or Mil-R reticles depending on the unit's preference. The scope is mounted via a Nightforce Unimount or Spuhr SP-3602 with 20 MOA of cant built in to maximize elevation travel for long-range work. CCC carries Nightforce optics and mounts — see our Nightforce collection for period-correct options.
Complete Your Mk13 Setup
→ Mk13 Mod 7 — Full Deployment Kit with Case — includes spares, cleaning kit, and Crane documentation.
→ Nightforce Optics at CCC — NXS and ATACR in stock for Mk13-correct configurations.
Further Reading
→ The Firearm Blog — Accuracy International Platform Coverage
Charlie's Custom Clones has been the authority on military-clone and mil-spec firearms since 2017. For authentic NSW sniper platform builds built by people who know what clone-correct truly means, there is no better source — contact us with any questions about the Mk13 Mod 7 or its operational history.
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