MK12 Mod r
A Modern, Piston-Driven Evolution of a Legend
Evolution of a SPR
The MK12 Mod R takes the storied MK12 concept into the 21st century: the same precision-minded lineage but reimagined with a user-tunable piston system and premium components straight from the factory. Built around a match‑grade barrel, a competition drop‑in trigger kit, and our enhanced lower parts kit, the MK12 Mod R is engineered to deliver the repeatable accuracy and robustness shooters demand — with the reliability advantages of a piston-driven platform. When fitted with the proper optic, ammunition, and shooter skill, this rifle is a platform capable of consistent long-range performance out to 1,000 yards.
Why the MK12 Mod R
The MK12 earned its reputation for delivering precision in a combat-capable package. The Mod R advances that legacy by solving some of the long-standing tradeoffs of direct impingement designs. Our adjustable piston system keeps the action cleaner and cooler, reduces carrier tilt and cyclic stress, and lets you tune gas flow to match suppressors, ammo loads, and accessory packages without a gunsmith. Combined with a competition-grade trigger and match barrel, the Mod R brings real-world durability and shootability to precision engagements.
Key Features:
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Adjustable piston gas system — user-tunable for optimal reliability across suppressors, ammo types, and accessory loads. Cleaner operation and reduced heat transfer to the receiver.
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Match‑grade barrel — precision-rifled for consistent groups and long service life.
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Competition drop‑in trigger kit (factory installed) — crisp, repeatable break and short reset for confident, accurate follow-up shots.
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Enhanced lower parts kit — upgraded components for improved ergonomics, reliability, and longevity under heavy use.
The MK12 Mod R — precision heritage, modernized reliability. Ready for the range, duty, or any mission where repeatable accuracy and rugged dependability matter.
Specs
Caliber
.223 wylde, 6mm arc
m16 Enhanced Dual Ejector
BolT Carrier Groups
Match Grade
Barrel
18"
Barrel Length
Piston
cycle operation
AE AEM5 Suppressor or customer specified
muzzle Device
superlative arms adjustable
gas block
trigger
Triggertech Competitive 3 lbs or customer specified
MI Combat T-Series Rail or Customer Specified
Handguard
Magpul K2 or customer specified
Grip
Magpul PRS Lite or Customer Specified
Stock
radian raptor
charging handle
average 8 lbs depending on options
Weight
customers choice cerakote h, f or elite series
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