Description
The FAB Defense FRBS Offset Folding Backup Rifle Sights Kit in Left Hand Black is a purpose-built backup sighting solution engineered for shooters who run magnified optics in close-quarters battle (CQB) environments. Designed to mount at a 45-degree offset on any standard 1913 MIL-STD Picatinny rail, these sights allow for instant transitioning from a magnified optic to iron sights without removing your hands from the firearm — a critical advantage in fast-moving tactical situations.
The kit includes both a Rear Backup Sight (RBS) and a Front Backup Sight (FBS). The RBS offers manual windage adjustment, while the FBS provides manual elevation adjustment — both without requiring any tools. The folding design features a sleek, low-profile form factor with minimal protruding parts, ensuring the sights stay out of the way when not in use and deploy quickly when needed.
Constructed from durable fiberglass-reinforced polymer and metal, the FRBS kit is built to withstand the rigors of field use while keeping overall weight to a minimum at just 30 grams. The left-hand configuration makes this kit ideal for left-handed shooters or specific rail setups requiring a left-side offset mount.
**Key Features:**
– Offset folding design for use alongside magnification optics during CQB scenarios
– Tool-free windage (RBS) and elevation (FBS) adjustments
– Sleek, low-profile form with minimal protruding parts
– Compatible with 1913 MIL-STD Picatinny rails
– Fiberglass-reinforced polymer and metal construction
– Available in left-hand configuration
– Lightweight at only 30 grams
**Specifications:**
– Length: 52 mm
– Width: 32 mm
– Height: 14 mm
– Length Deployed: 30 mm
– Height Deployed: 42 mm
– Weight: 30 g
– Color: Black
– Hand: Left
– Rail Compatibility: 1913 MIL-STD Picatinny
Order the FAB Defense FRBS Offset Folding Backup Rifle Sights Kit today at VanTon Arms and take advantage of our competitive pricing and fast nationwide shipping. Stock on hard-to-find tactical accessories like this moves quickly — order online now to secure yours.






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