PSA «Sabre» Upper MK12 Mod S 14.5″ FN CHF CL w/PRI Gen3 FDE Tube

PSA “Sabre” MK12 Mod S 14.5″ FN CHF CL w/ PRI Gen 3 FDE Tube & SilencerCo ASR, or AAC 51T Flash Hider, or B&T 3 Prong Pin & Weld – Premium AR-15 UpperExperience next-level performance with the PSA Sabre MK12 Mod S 14.5″ 5.56 FN Cold Hammer Forged Chrome-Lined complete upper. This premium Sabre series build features an FN-manufactured barrel, a 13″ PRI Gen 3 FDE Tube handguard, and a factory pinned & welded SilencerCo ASR muzzle device for quick suppressor attachment. Built for accuracy, durability, and suppressor use, it’s ideal for MK12-style clones, tactical setups, and serious AR-15 enthusiasts.

Key Features & Benefits

• FN Cold Hammer Forged Chrome-Lined Barrel: 14.5″ 5.56 NATO barrel with 1:7 twist, M4 extension, extended feed ramps, mid-length gas system, and .750″ gas block journal. Made from FN’s proprietary “Machine Gun Steel” (chrome moly vanadium), the hammer forging and extra-thick chrome lining deliver exceptional durability, heat resistance, accuracy, and barrel life — perfect for high-round-count training or duty applications.
• PRI Gen 3 FDE Tube (13″): Precision Rifle Industries free-float tube handguard in Flat Dark Earth Cerakote. Lightweight, rigid, and compatible with traditional MK12 aesthetics while offering excellent heat dissipation and accessory mounting options.
• SilencerCo ASR, or AAC 51T Flash Hider, or B&T 3 Prong Pin & Weld Muzzle Device: Factory pinned & welded for legal 16″+ overall length (NFA-compliant without a tax stamp). Provides fast, repeatable suppressor attachment/detachment for SilencerCo ASR-compatible cans.
• Premium Upper & BCG: Forged 7075-T6 A3 upper with M4 T-marked receiver. Includes PSA Custom Fathers of Freedom BCG by MicroBest (Carpenter 158 bolt, Sprinco extractor spring, mag-phosphate finish) and Radian Raptor LT charging handle for ultra-reliable cycling.
• Finish: FDE Cerakote for a sleek, durable tactical look.

This Sabre MK12 upper offers sub-MOA potential with quality 5.56 ammo, smooth operation, and proven reliability from premium American-made components. A standout choice for building a classic MK12 clone or a versatile suppressed rifle.Perfect for: MK12 enthusiasts, suppressor users, precision shooters, and AR-15 builders seeking FN CHF performance and factory suppressor readiness.

Specifications:Caliber: 5.56 NATOBarrel Length: 14.5″ (Pinned & Welded to 16″+ overall)Twist Rate: 1:7Gas System: Mid-LengthBarrel: FN Cold Hammer Forged Chrome Moly Vanadium, Chrome-LinedHandguard: 13″ PRI Gen 3 FDE TubeMuzzle Device: SilencerCo ASR, or AAC 51T Flash Hider, or B&T 3 Prong (Pin & Weld)Receiver: Forged 7075-T6 Aluminum, M4 T-MarkedBolt Carrier Group: MicroBest Fathers of Freedom (Carpenter 158)Charging Handle: Radian Raptor LTFinish: FDE CerakoteMuzzle Thread: 1/2×28

Order this PSA Sabre MK12 Mod S upper today and elevate your build with premium FN barrel technology and SilencerCo suppressor compatibility. In stock with fast shipping from Palmetto State Armory!

By purchasing PSA Sabre Upper MK12 Mod S 14.5″ FN CHF CL w/PRI Gen3 FDE Tube from our online store, you are guaranteed to receive a high-quality item. We work with trusted brands to offer shooting and hunting enthusiasts, both amateur and professional, quality products at a reasonable price. Choosing to buy from us means opting for quality and practicality

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