Mission First Tactical Rear Back Up Polymer Sight flip up with Windage Adjustment
$28.03
The MFT Backup Polymer Rear Sight with Windage Adjustment is a durable, low-profile flip-up sight for rifles with 1913 Picatinny rails, featuring a protective shroud and easy windage adjustments.
1 in stock
The Back Up Polymer Flip Up Rear Sight with Windage Adjustment (BUPSWR) mounts onto a 1913 Picatinny rail. A flat head screw driver is required to adjust an Infinite MOA. Unlike other backup sights MFT has developed a shroud that shelters the aperture from debris and impact damage when not deployed. A slim profile allows the sight to sit under all current magnifiers and optics. Manufactured using a specially developed Military Grade reinforced super tough polyamide MADE IN THE USA.
| Weight | 0.070 lbs |
|---|---|
| Dimensions | 5.000 × 3.500 × 0.980 in |
| Manufacturer | Mission First Tactical |
| Frame Material | Polymer |
PROCESSING & SHIPPING
Orders typically ship within 1–3 business days (Monday–Friday) after payment and all required documentation are received. Time to arrival after shipment depends on the carrier. Shipping method is at BT Gun Company’s discretion; ammunition and oversized accessories are charged at actual shipping cost. We do not ship to Hawaii or Alaska.
FIREARM TRANSFERS
- Firearms must ship to a licensed FFL dealer of your choosing — confirm with them first that they can accept the transfer.
- Your receiving FFL will need to email their license to [email protected] before we can ship.
- Inspect your firearm at your FFL’s location before signing ATF Form 4473 — once signed, the firearm is considered accepted.
You’re responsible for knowing the firearms laws in your state before ordering. For complete shipping, returns, and restocking-fee policy details, see our Shipping & Returns page.

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