Home / Products / Black Rain Ordnance / Black Rain Ordnance SPEC15, 5.56mm, 10.5 Barrel, 15 Handguard OCL Polonium 556 Suppressor Complete Upper
Black Rain Ordnance SPEC15, 5.56mm, 10.5 Barrel, 15 Handguard OCL Polonium 556 Suppressor Complete Upper

Black Rain Ordnance SPEC15, 5.56mm, 10.5 Barrel, 15 Handguard OCL Polonium 556 Suppressor Complete Upper

Lowest Listed Price
$999.99
MSRP
$999.99
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Updated
Sep 2, 2026
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Specifications

MPN
BRO-S1515-OCL556

Description

697067883068-Black Rain Ordnance SPEC15, 5.56mm, 10.5" Barrel, 15" Handguard, Suppressor Ready Complete Upper Receiver664533654132-Otter Creek Labs Polonium 5.56 Duty Suppressor Pairing a Black Rain suppressor-ready upper with the proven durability of the Polonium makes this bundle a turnkey solution for shooters who demand outstanding suppressed performance, rugged reliability, and tactical efficiency. Built for users who run their gear hard-whether in home defense roles, professional environments, or custom-duty builds-this combination delivers seamless compatibility and exceptional suppression in a compact, maneuverable package.The Black Rain 10.5" complete upper is purpose-engineered for suppressed use, featuring a stainless steel 1:7" barrel, nickel-boron BCG, and a 15" hybrid M-Lok handguard that allows up to 5.4" of the Polonium to nest inside while accommodating its 1.90" diameter. The result is a streamlined, low-profile setup with excellent balance and reduced overall signature.Matched with the Polonium-one of the most respected hard-use 5.56 suppressors on the market-you get a duty-rated can optimized for real performance, not inflated marketing claims. Its 6mm bore also accepts 6mm/.243 cartridges, while the built-in internal and external flash hider dramatically reduces flash under night vision or low-light conditions. Extensive external weight-reduction machining increases surface area by up to 10%, helping the suppressor shed heat faster while remaining exceptionally strong.Together, this bundle gives builders and tactical shooters a complete suppressed solution that excels under pressure, handles intense firing schedules, and maintains the accuracy, reliability, and flash control demanded in critical situations. A powerful pairing-ready for immediate deployment on your next precision build.SpecificationsAction: Direct Impingement Complete UpperBarrel: 10.5" Stainless Steel, 1:7" Twist, 1/2"x28 TPIHandguard: 15" Hybrid M-LokBCG: Nickel-Boron CoatedSuppressor Compatibility: Accepts suppressors up to 1.90" diameter with 5.4" nested inside handguardSuppressor Model: Polonium (Hard-Use Duty-Rated)Caliber Compatibility (Suppressor): 5.56 with 6mm/.243 capable boreFeatures (Suppressor): Integrated internal/external flash hider, increased cooling surface area, precision weight-reduction machiningEquip your rifle with a battle-proven suppressor and a purpose-built upper-only at ARMSAGORA's retailers.
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