Sons of Liberty Gun Works OB1 Craighead Signature, 5.56mm, 11.5" Barrel, 1- 30rd Magazine, Short Barreled Rifle

Sons of Liberty Gun Works OB1 Craighead Signature 11.5-Inch SBR

The Sons of Liberty Gun Works OB1 Craighead Signature is a compact 5.56mm short-barreled rifle built around an 11.5-inch P3 chrome-lined barrel and Christian Craighead's signature configuration. This SBR includes an A2 flash hider, Magpul DT stock, Liberty two-stage trigger and one 30-round magazine. Its Rhodesian Brushstroke camouflage gives the rifle a distinctive identity.

Deep Blackbeard Boarding Party engraving complements the Cerakote camouflage treatment. Each rifle has an individual pattern, so the placement of the brushstroke colors varies. The signature finish accompanies a substantive component package intended for shooters who value a compact AR-platform rifle with clearly specified parts.

Buy the OB1 Craighead Signature SBR at BattleHawk Armory for its 11.5-inch P3 barrel, refined controls and distinctive camouflage.

11.5-Inch P3 Chrome-Lined Barrel

The barrel is made from 41V50 chrome-moly steel with a chrome-lined bore and chamber, phosphate exterior and 1:7 twist. Its .223 Wylde chamber accepts both .223 Remington and 5.56 NATO ammunition. P3 polygonal rifling is a defining feature of this barrel, while chrome lining supports durability through repeated use.

This 11.5-inch configuration uses a carbine-length gas system, 5/8x24 muzzle threads and an A2 flash hider. The short barrel establishes the rifle's compact format. Exact barrel length and muzzle-device configuration matter when comparing the OB1's available versions.

L89 Handguard and Forged Receiver Construction

A 10.75-inch L89 handguard provides seven sides of M-LOK attachment positions and a titanium barrel nut. Drive-Lock engagement, anti-rotation features and a stainless steel locating pin reinforce the connection between the handguard and upper receiver. Integrated QD sling mounting points provide a convenient sling interface.

The upper and lower receivers are forged 7075-T6 aluminum with Type III hardcoat anodizing beneath the signature treatment. The upper includes M4 feed ramps. Together, the receiver and rail construction form a professional-grade foundation for the OB1's compact configuration.

Intermediate Buffer System and SOLGW Bolt Carrier Group

The OB1 uses an intermediate-length buffer system with an A5H2 buffer. The extended buffer arrangement and rifle-length spring system support a smooth operating cycle. The SOLGW bolt carrier group includes a chrome-lined carrier and gas key, with high-pressure testing and magnetic-particle inspection among its quality checks.

Liberty Two-Stage Trigger and Charging Handle

The Liberty L2S trigger has a 4.5-pound total pull, a distinct second stage and a responsive reset. Its hybrid curved-and-flat trigger shoe presents a defined finger contact surface, while the DLC-coated components and full-power springs complete the trigger assembly. A 50-degree single-sided selector handles the safety function.

The Liberty charging handle is ambidextrous, allowing access from either side of the receiver. Its shaped latches reduce snag points, and the rear lip helps interrupt gas moving toward the back of the upper during suppressed use.

Magpul Furniture and Signature Camouflage

The Magpul DT stock and K2+ grip establish the shoulder and firing-hand interfaces, complemented by a Magpul trigger guard and polymer ejection-port cover. The Rhodesian Brushstroke Cerakote pattern and deep engraving carry the Craighead identity across the rifle without obscuring the component specifications that define the SBR.

Product Specifications

• Manufacturer: Sons of Liberty Gun Works
• Model: OB1 Craighead Signature
• Firearm type: Short-barreled rifle (SBR)
• Caliber compatibility: 5.56 NATO and .223 Remington
• Chamber: .223 Wylde
• Barrel length: 11.5 inches
• Barrel material: 41V50 chrome-moly steel
• Barrel treatment: Chrome-lined bore and chamber; phosphate exterior
• Rifling: P3 polygonal
• Twist: 1:7
• Gas system: Carbine length
• Muzzle threads: 5/8x24
• Muzzle device: A2 flash hider
• Handguard: 10.75-inch L89 with seven-sided M-LOK
• Barrel nut: Titanium
• Receivers: Forged 7075-T6 aluminum
• Trigger: Liberty L2S two-stage, 4.5-pound total pull
• Safety: 50-degree single-sided selector
• Charging handle: Liberty ambidextrous
• Buffer system: Intermediate length with A5H2 buffer
• Stock: Magpul DT
• Grip: Magpul K2+
• Finish: Rhodesian Brushstroke Cerakote; pattern varies
• Included magazine: One 30-round magazine
• SKU: LP-OB1-556-115-A2-SBR-CK
• UPC: 306005003092

Included with This Rifle

• OB1 Craighead Signature 11.5-inch SBR with A2 flash hider and Magpul DT stock
• One 30-round magazine

The rifle carries a SOLGW lifetime warranty that includes normal wear. This is an NFA item; all applicable laws and regulations apply.

Frequently Asked Questions

Order the OB1 Craighead Signature SBR from BattleHawk Armory and choose a specialized 11.5-inch rifle with P3 barrel construction, a Liberty two-stage trigger and unmistakable signature styling.