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Sig Sauer Factory Original 1911 .45 ACP Threaded Barrel - 5.6" Length, .578x28 TPI Thread Standard, Fits Full-Size 5" 1911 TACOPS & Government Platforms, Nitron Black Finish - BBL-1911-45-TACOPS-TB / 798681437993
Product Description
Adapting a full-size 1911 pistol for suppressor use or adding muzzle devices requires a drop-in replacement barrel engineered to match precise locking lugs and hood dimensions. Aftermarket barrels often feature non-standard lug profiles or tight un-fitted dimensions that demand extensive gunsmith filing, stone work, or custom link fitting on your bench. The **Sig Sauer® Factory Original 1911 .45 ACP Threaded Barrel (BBL-1911-45-TACOPS-TB / 798681437993)** flatlines these installation and alignment limitations, delivering a factory-machined **5.6-inch threaded match barrel** clad in Sig's protective Nitron black finish.
Proudly engineered and precision-machined in the United States by Sig Sauer, this OEM upgrade barrel is forged from high-tensile **carbon steel** with a corrosion-resistant black Nitron coating. Designed primarily as a direct replacement for full-size 5-inch Sig 1911 TACOPS and standard Government-profile .45 ACP models, it features the industry-standard **.578x28 TPI thread pattern** for seamless compatibility with .45 caliber suppressors, compensators, and muzzle brakes. Complete with a knurled thread protector cap to shield threads when shooting unsuppressed, this drop-in upgrade boosts your pistol's suppressed staging capabilities straight from your armorer bench.
Engineered to lock up tightly inside 5-inch full-size 1911 slides, this factory-calibrated threaded barrel guarantees optimal lockup tolerances and smooth cycling directly from your workspace bench.
*Armorer Bench Notes & Real-World 1911 Barrel Staging Guidance: The Sig Sauer BBL-1911-45-TACOPS-TB package arrives workspace ready, containing the 5.6-inch Nitron-finished threaded barrel and knurled steel thread protector cap. SIG 1911 FULL-SIZE HOST PLATFORM INTERFACE MATRIX: This barrel is engineered natively, strictly, and dimensionally to fit **5-inch full-size Government-profile Sig Sauer 1911 pistols (e.g., 1911 TACOPS, Scorpion, XO, Nightmare, Tac Pac)** chambered in .45 ACP. *Fitting & Linkage Checklist:* While designed as a factory drop-in part for Sig 1911 slides, 1911 barrel locking lugs and slide stop pin alignment can vary across different manufacturers—minor hand-fitting of the barrel link or hood may occasionally be required on non-Sig host frames. Armorer Workbench Custom Staging Sequence: 1. Visually and physically confirm your host 1911 pistol is completely clear of live ammunition, the magazine is removed, and the chamber is checked safe and empty. 2. Field strip the slide assembly, removing the recoil spring plug, recoil spring, barrel bushing, slide stop pin, and factory non-threaded barrel. 3. Clean the inside of the slide locks and bushing bore using a brass brush and solvent to clear carbon build-up. 4. Transfer your factory barrel link and link pin to the lower lug of the new Sig threaded barrel (if not pre-installed). 5. Insert the new 5.6-inch barrel into the slide, rotate the barrel bushing into position, reassemble the slide onto the frame, and perform a manual lockup function check on your bench. 6. Thread your suppressor booster assembly onto the .578x28 threads, verify bore concentricity with an alignment rod, and hand-tighten firmly before rolling downrange.*
Key Features
- Factory OEM Sig Sauer Engineering: Precision CNC-machined in the USA to exact Sig 1911 factory tolerances for reliable lockup and drop-in slide fitment.
- Extended 5.6-Inch Overall Length: Features extra length beyond the slide muzzle to clear standard barrel bushings and provide adequate suppressor clearance.
- Industry Standard .578x28 TPI Threads: Threaded in .578x28 right-hand pitch to accept standard .45 ACP suppressors, pistons, QD adapters, and muzzle brakes.
- Includes Knurled Thread Protector: Comes equipped with a textured steel thread cap that protects exposed muzzle threads from impact damage and grit when shooting unsuppressed.
- Forged High-Grade Carbon Steel: Built from heat-treated carbon steel to withstand high chamber pressures, harsh slide cycles, and intense suppressor gas blowback.
- Protective Nitron Black Finish: Coated in Sig's proprietary matte black Nitron finish to resist corrosion, friction wear, and chemical cleaning solvents.
Product Specifications
- Brand: Sig Sauer® (Newington, NH / Made in the USA)
- Model Line: Factory OEM Replacement Barrels - 1911 Series
- MPN/SKU Code: BBL-1911-45-TACOPS-TB (1911 .45 Threaded Barrel Black Standard SKU)
- UPC Code Profile: 798681437993
- Caliber Action Standardization: .45 ACP (Automatic Colt Pistol) Centerfire Cartridge
- Muzzle Thread Pattern: .578x28 TPI (Threads Per Inch) Right-Hand Pitch
- Host Firearm Fitment: Sig Sauer Full-Size 5" 1911 Models (TACOPS, Scorpion, XO, Government 1911s)
- Overall Barrel Length: 5.60 Inches (~142.2 mm Threaded Barrel Axis)
- Structural Material Base: Precision CNC-Machined Forged Heat-Treated Carbon Steel
- Exterior Finish Dressing: Durable Matte Black Nitron Wear-Resistant Protective Finish
- Included Accessories: 1x Knurled Steel Thread Protector Cap
- Full Kit Component Checklist: 1x Sig 1911 .45 ACP Threaded Barrel, 1x Thread Protector
- Packaging Format Class: Factory Original Sealed Sig Sauer Graphic Display Box Packaging
- Product Type Category: Handgun Components / Replacement Barrels & Threaded Muzzle Parts
- Net Component Mass: ~4.60 Ounces (~130.4 Grams Steel Barrel Mass)
- Global Quality Certifications: Built strictly to OEM Factory Specifications and Metrics
- Warranty Tracking Protection: Fully Backed by Sig Sauer Factory Limited Warranty
