CA Compliance:
California compliance
- Status: Legal to own in California.
- Configuration: Fixed magazine (AR MagLock), installed by WBT. The rifle keeps its pistol grip, adjustable stock and flash hider. To reload, you open the action, swap the magazine and close it.
- Magazine: 10-round.
- Your options: If this page shows a compliance selector, choose the build you prefer and we configure it that way. If not, this is the configuration we offer by default; on AR-pattern rifles and some AKs a different build is often possible, so ask us before you order.
- Upgrades: Add the KingPin quick-release takedown pin for faster reloads. See California Compliance Upgrades; add it to this order and it ships installed.
- Learn more: How fixed-magazine rifles work · How featureless rifles work · Why some rifles can only be built one way
About this rifle
Geissele Automatics Super Duty SD556 is an AR-15 chambered in .223/5.56 with a 16" barrel and a 10-round capacity. Finish: Green. WBT configures it for California at our Yuma, Arizona warehouse before it ships.
Specifications
- Brand: Geissele Automatics
- Caliber: .223/5.56
- Action: Semi-Automatic
- Capacity: 10
- Barrel: 16 in
- Finish / color: Green
- California compliance: Fixed Magazine – MagLock
- Manufacturer part #: 08-188-40G
- UPC: 817953028483
Buying from WBT Guns
- Delivery: Free pickup at our La Mesa store with no transfer fee, or shipment to any California gun store you choose. Select your FFL at checkout.
- Compliance guarantee: Every firearm leaves our shop in the configuration described on this page, function-checked by our compliance team.
- Payment: Pay in full, put 50% down with the balance due in 14 days, or finance with Credova.
- Paperwork: Firearm Safety Certificate, DROS and California's 10-day waiting period apply. We handle each step with you at pickup.
- Questions: Call (619) 667-9453 or email sales@wbtguns.com. FAQ · California Rifle Compliance Guide
WBT Guns is family-owned in La Mesa, California, and has configured firearms for California buyers since 2012.
A note on accuracy. We work hard to keep every listing correct, but specifications, images and compliance details come from many sources and can contain errors or change without notice. Images may show a configuration that is not California-legal. If a detail on this page matters to your decision, call us and we will confirm it against the actual firearm before you order. The compliance information here is general in nature and is not legal advice; California and local laws change, and the configuration described is confirmed at the time of sale. All sales are subject to applicable federal, state and local law and to the buyer's eligibility to purchase.
The Super Duty Rifle features the latest in weapon technology available exclusively from Geissele Automatics. This 16” rifle chambered in 5.56mm features a Nanoweapon coated Surefire Closed-Tine Flash Hider mounted to an in-house 16” Nitride, Cold Hammer Forged, 1-7 twist Geissele barrel. Our barrels are precision machined and cold hammer forged utilizing the highest quality materials at our state of the art facility in North Wales, PA. The Geissele Length gas system and Geissele Super Compact Gas Block (with bomb-proof installation) ensures reliability and optimal performance in extreme conditions and heavy use.
Exclusive to the Super Duty 16” Rifle is the brand new SSA-E X with Lightning Bow® trigger. This nanocoated, two-stage trigger features a wide body and bow shape that finds the perfect balance between a classic M4 trigger and a flat body trigger. At the heart of this rifle is the Geissele Reliability Enhanced Bolt Carrier Group. This Nanoweapon coated BCG features a properly torqued and staked, chrome lined gas key. The Cam Pin is machined from advanced, medical steel known as H13 which is also coated with Nanoweapon for maximum corrosion and wear resistance. The Reliability Enhanced Bolt Carrier Group also features extended upper rails, providing greater stability and dramatically increasing feeding reliability.
The Reliability Enhanced Bolt Carrier Group comes with the Geissele Stressproof Bolt. Made from Carpenter 158+, directly developed with Carpenter Steel metallurgists to create a material that is cleaner and has less impurities. This makes our Stressproof bolt stronger and more fatigue resistant. The Geissele Stressproof bolt is also forged, not machined from barstock. This allows us to optimize the grain structure of the steel to yield a bolt capable of 5 times the life of a mil-spec bolt. Each bolt is rigorously inspected, high pressure tested, mag particle inspected and Nanoweapon coated.
The Super Duty lower is precision machined from 7075-T6 aluminum and features Geissele’s Ultra Duty Lower Parts Kit featuring our Ambidextrous Super Configurable safety and Ultra Precision trigger guard. A high quality mil-spec Geissele Buffer Tube with a Super-42 in H2 buffer ensures this rifle is properly tuned out of the box.
Rounding up the package is a 15” MK16 Super Modular Rail, that mates to the Super Duty Upper Receiver via a center aligning tab that removes any chance of rail rotation. The MK16 family of rails are renowned by operators for their performance and comfort. An Airborne Charging Handle, ensure smooth and reliable operation.
A Geissele Grip and a B5 Systems Enhanced Sopmod Stock finalizes this high-end rifle that offers the user unmatched accuracy and performance.
SPECS
LENGTH: 16"
CALIBER: 5.56MM
COLOR: 40mm Green
LOWER RECEIVER: Super Duty Lower Mil-Spec
UPPER RECEIVER: Super Duty M4 Upper
BCG: Reliability Enhanced Bolt Carrier Group
BOLT: Geissele Stressproof Bolt
RAIL 15" SMR MK16 w/ Geissele Center Tab
TRIGGER: SSA-E X w/ Lightning Bow®
BARREL: 16" Barrel, CHF, Nitride, 1-7 Twist - Geissele Profile
GAS SYSTEM: Geissele Length
GAS BLOCK: Super Compact Gas Block
CHARGING HANDLE: Airborne Charging Handle
MUZZLE: Nanocoated Surefire Closed-Tine Flash Hider
LOWER PARTS KIT: Ultra Duty Lower Parts Kit
BUFFER: Mil-Spec 6 Position, 7075-T6
BUFFER ASSEMBLY: Super-42 w/ H2 Buffer
STOCK: B5 Systems Enhanced Sopmod Stock
GRIP: Geissele Grip
