FAB Defense FX-RBS Rear Back-Up Sight AR-15/M4/M16 Folding Black
$11.49
at Optics Planet ·
6 retailers · $11.49 to $55.99 in stock
This listing: BattleHawk Armory $37.12, out of stock
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Offers
$11.49
+ shipping in cart
History
$51.49
+ shipping in cart
History
$55.20
+ shipping in cart
History
$55.99
+ shipping in cart
History
$67.15
$55.20 + $11.95
History
$37.12
+ shipping in cart
History
Shipping estimate for one item to the lower 48 from the retailer's published policy or feed; the retailer's cart is final.
Price history
Lowest price across retailers each day.
- Lowest seen
- $11.49
- Typical price
- $54.99
- Tracked since
- Apr 9, 2026
Today's best price matches the 216-day low and is 79% below typical.
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