Iron Sights (BUIS)

Back Up Iron Sight Selection from Operation Parts

Here you will find all of the backup iron sights (BUIS) that we carry for AR-15 / SR-25. View real-time inventory on M4 sights, M16 sights and a variety of AR 15 sights, which can either be used alone or in conjunction with a red dot scope. We carry both fixed and fold down/flip up versions that can be stored in the down position when only the red dot is required. They can quickly be deployed if the red dot were to go down. We carry AR15 iron sights made by A.R.M.S., GG&G, LMT-Lewis Machine & Tool, KAC-Knight's Armament, PRI-Precision Reflex, Troy Industries, Vltor, and YHM-Yankee Hill Machine.

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  •  Knight's Armament Flip-Up Front Or Rear Sight Clamp
    Knight's Armament Flip-Up Front Or Rear Sight Clamp $3.79 $3.60
    Add To Cart
  • A.R.M.S. #40 Stand Alone Flip Up Rear Sight 500-600 Meters
    A.R.M.S. #40 Stand Alone Flip Up Rear Sight 500-600 Meters $115.49
    Add To Cart
  • A.R.M.S. #40L Stand Alone Flip Up Rear Sight (Low Profile)
    A.R.M.S. #40L Stand Alone Flip Up Rear Sight (Low Profile) $129.71
    Add To Cart
  • A.R.M.S. #40L-SP Flip Up Rear Sight Same - Plane Dual Aperture (Low Profile)
    A.R.M.S. #40L-SP Flip Up Rear Sight Same - Plane Dual Aperture (Low Profile) $129.71
    Add To Cart
  • A.R.M.S. #40Std A2 250-300 Meter Backup Iron Sight
    A.R.M.S. #40Std A2 250-300 Meter Backup Iron Sight $115.49
    Add To Cart
  • A.R.M.S. #71L series, Front Sight, Black
    A.R.M.S. #71L series, Front Sight, Black $40.33
    Add To Cart
  • A.R.M.S. #71L series, Rear Sight, Black
    A.R.M.S. #71L series, Rear Sight, Black $58.86
    Add To Cart
  • A.R.M.S. Silhouette #41-B - Folding Front Sight Barrel Mounted
    A.R.M.S. Silhouette #41-B - Folding Front Sight Barrel Mounted $167.32
    Add To Cart
  • A.R.M.S. Silhouette #41-B-L - Folding Front Sight Barrel Mounted, With Bayonet Lug
    A.R.M.S. Silhouette #41-B-L - Folding Front Sight Barrel Mounted, With Bayonet Lug $173.86
    Add To Cart
  • Daniel Defense A1.5 Fixed Rear Sight
    Daniel Defense A1.5 Fixed Rear Sight $73.00
    Out of stock
  • Daniel Defense Rail-Mounted Fixed Front Sight
    Daniel Defense Rail-Mounted Fixed Front Sight $63.00
    Out of stock
  • GG&G A2 Flip-Up Rear Back Up Iron Sight (BUIS) With Locking Detent
    GG&G A2 Flip-Up Rear Back Up Iron Sight (BUIS) With Locking Detent $124.95 $93.71
    Add To Cart
  • GG&G A2 Flip-Up Rear Back Up Iron Sight (BUIS) With Locking Detent And Tritium
    GG&G A2 Flip-Up Rear Back Up Iron Sight (BUIS) With Locking Detent And Tritium $174.95 $131.32
    Add To Cart
  • GG&G AR15 Tactical Modular Bolt On Flip Up Front Sight And Gas Block
    GG&G AR15 Tactical Modular Bolt On Flip Up Front Sight And Gas Block $165.00 $132.00
    Add To Cart
  • GG&G Fixed 45 Degree Transition Iron Sights
    GG&G Fixed 45 Degree Transition Iron Sights $175.00 $140.00
    Add To Cart
  • GG&G Flip Up Front Sight For AR-15 Tactical Forearms
    GG&G Flip Up Front Sight For AR-15 Tactical Forearms $89.95 $69.95
    Out of stock
  • GG&G Front Flip Up Sight For Dovetail Gas Blocks
    GG&G Front Flip Up Sight For Dovetail Gas Blocks $135.00 $90.72
    Add To Cart
  • GG&G Mil-Std-1913 Accessory Rail For Modular Tactical Flip Up Front Sights
    GG&G Mil-Std-1913 Accessory Rail For Modular Tactical Flip Up Front Sights $31.00 $23.25
    Add To Cart
  • GG&G Multiple Apterture Device (Mad) Flip-Up Rear Backup Iron Sight
    GG&G Multiple Apterture Device (Mad) Flip-Up Rear Backup Iron Sight $140.00 $104.95
    Add To Cart
  • GG&G Multiple Apterture Device (Mad) Flip-Up Rear Backup Iron Sight With Ranging Aperture
    GG&G Multiple Apterture Device (Mad) Flip-Up Rear Backup Iron Sight With Ranging Aperture $140.00 $84.95
    Add To Cart
  • GG&G Multiple Apterture Device (Mad) Flip-Up Rear Backup Iron Sight With Tritium
    GG&G Multiple Apterture Device (Mad) Flip-Up Rear Backup Iron Sight With Tritium $190.00 $127.68
    Add To Cart
  • GG&G Spring Actuated A2 Back Up Iron Sight (BUIS)
    GG&G Spring Actuated A2 Back Up Iron Sight (BUIS) $124.95 $93.71
    Add To Cart
  • GG&G Spring Actuated A2 Back Up Iron Sight (BUIS) With Tritium Aperture
    GG&G Spring Actuated A2 Back Up Iron Sight (BUIS) With Tritium Aperture $174.95 $129.95
    Add To Cart
  • GG&G Spring Actuated Flip Up Front (BUIS) Sight For AR15 Tactical Forearms
    GG&G Spring Actuated Flip Up Front (BUIS) Sight For AR15 Tactical Forearms $99.95 $79.96
    Add To Cart
  • GG&G Spring Actuated Flip Up Front Sight (BUIS) For AR15 Dovetail Gas Blocks
    GG&G Spring Actuated Flip Up Front Sight (BUIS) For AR15 Dovetail Gas Blocks $99.95 $79.96
    Add To Cart
  • Griffin Armament Fail Safe Angle Sights
    Griffin Armament Fail Safe Angle Sights $194.95 $184.95
    Choose Options
  • KAC-Knight's Armament 200-600 Meter Flip-Up Rear Sight
    KAC-Knight's Armament 200-600 Meter Flip-Up Rear Sight $193.98 $189.95
    Add To Cart
  • KAC-Knight's Armament 200-600 Meter Micro Flip-Up Rear Sight
    KAC-Knight's Armament 200-600 Meter Micro Flip-Up Rear Sight $153.15 $149.95
    Out of stock
  • KAC-Knight's Armament 300 Meter Flip-Up Rear Sight
    KAC-Knight's Armament 300 Meter Flip-Up Rear Sight $184.72 $181.03
    Add To Cart
  • KAC-Knight's Armament 300 Meter Micro Flip-Up Rear Sight
    KAC-Knight's Armament 300 Meter Micro Flip-Up Rear Sight $124.50 $119.95
    Add To Cart
  • KAC-Knight's Armament 45 DEG Offset Rail Mounted Micro 300m Sight Kit
    KAC-Knight's Armament 45 DEG Offset Rail Mounted Micro 300m Sight Kit $233.75 $229.08
    Out of stock
  • KAC-Knight's Armament 45 Degree Offset Micro Front and Rear Sight Set
    KAC-Knight's Armament 45 Degree Offset Micro Front and Rear Sight Set $281.25
    Out of stock
  • KAC-Knight's Armament KeyMod Sight Kit With 300M Rear Sight
    KAC-Knight's Armament KeyMod Sight Kit With 300M Rear Sight $278.44 $264.49
    Add To Cart
  • KAC-Knight's Armament Locking Front Folding Sight, Fits SR15, SR16, M16, AR-15 With 0.750 Inch Barrel
    KAC-Knight's Armament Locking Front Folding Sight, Fits SR15, SR16, M16, AR-15 With 0.750 Inch Barrel $459.95
    Out of stock
  • KAC-Knight's Armament M16 Leaf Sight For M203 Granade Launcher, Mounts To KAC RAS
    KAC-Knight's Armament M16 Leaf Sight For M203 Granade Launcher, Mounts To KAC RAS $242.96 $238.10
    Add To Cart
  • KAC-Knight's Armament Micro Front Flip Up Sight
    KAC-Knight's Armament Micro Front Flip Up Sight $153.15 $149.95
    Out of stock
  • KAC-Knight's Armament MK 11 Mod 0 Folding Front Sight, Push Button Locked
    KAC-Knight's Armament MK 11 Mod 0 Folding Front Sight, Push Button Locked $243.75 $238.88
    Add To Cart
  • KAC-Knight's Armament Peep Aperture For 300 M Sight
    KAC-Knight's Armament Peep Aperture For 300 M Sight $2.38 $2.33
    Add To Cart
  • KAC-Knight's Armament Standard SR25 Front Folding Sight
    KAC-Knight's Armament Standard SR25 Front Folding Sight $168.51 $165.14
    Add To Cart
  • Knight's Armament 45 Degree Offset Folding Micro Front Sight, Clamp Mount
    Knight's Armament 45 Degree Offset Folding Micro Front Sight, Clamp Mount $135.00 $132.30
    Out of stock
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