Geissele MRGG 7.62mm 20" Bbl DDC Rifle 08-527S

Geissele MRGG 7.62mm 20" DDC Rifle 08-527S traces its lineage straight back to a SOCOM program — this is the civilian version of the Geissele MK1 MOD0, adopted and battle-proven as part of the Very Long-Range Semi-Automatic Sniper System requirement, chambered here in 7.62x51 NATO.

This Geissele MRGG 7.62 rifle runs a 20" cold hammer forged, chrome-lined CRMOV barrel with a 1:8 twist, user-interchangeable with 6.5 Creedmoor for shooters who want one platform covering both chamberings. Geissele's Phased Array® gas system with Tri-Port™ metering runs through a custom rifle-length gas system, keeping recoil impulse and follow-up shot timing consistent as the barrel heats up over a long string. Billet upper and lower receivers, Type III hardcoat anodized, give the platform the rigidity match-grade accuracy that actually depends on.

This Geissele MRGG's MK18 rail runs 17.5" with an integrated ARCA-Lok bottom rail, useful for bipod and tripod mounting on precision setups. Inside, the Nanoweapon®-coated Reliability Enhanced BCG runs a forged Carpenter 158+ bolt, and the SSA-E two-stage trigger delivers a clean, repeatable break. A braided-wire Super 42 buffer spring cuts recoil further, and a Magpul PRS Lite stock, flared magwell, and oversized trigger guard round out the ergonomics.

Key Features:

• 20" cold hammer forged, chrome-lined CRMOV barrel, 1:8 twist
• Phased Array® gas system w/ Tri-Port™ metering, custom rifle-length gas
• Fully ambidextrous charging handle, bolt catch/release, magazine release, safety
• Nanoweapon®-coated Reliability Enhanced BCG, Carpenter 158+ bolt
• SSA-E two-stage trigger
• MK18 17.5" rail w/ integrated ARCA-Lok bottom rail
• Super 42 braided-wire buffer spring
• Approx. 10.8 lbs, DDC finish, user-interchangeable to 6.5 Creedmoor

This platform hands precision shooters in 7.62 NATO proven SOCOM engineering built for extended-range dominance.