Please be aware that due to high order volume our order processing time is approximately 5 business days.

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If you're unable to locate an item please contact us directly.

Please have the following information ready:

  1. Firearm Manufacturer
  2. Firearm Model and Serial Number
  3. Gauge or Caliber of Firearm
  4. Part Description
  5. Any other pertinent information

Then please call our Sales Department toll free at:

866-NUMRICH

(866-686-7424)

Outside U.S.A.

845-679-2417

Office Hours:

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8:00 a.m. to 4:30 p.m. EST

Apertures for Receiver Sights

Replacement blued-steel apertures available in 12 x 40 TPI.
Image Product # Manufacturer Model Description
View Larger Image 533210A 12 x 40 .046 .465 .340 .625

Our Price: $5.45

Image Product # Manufacturer Model Description
View Larger Image 533210F MOSSBERG 144LSB 12 x 40 .046 .465 .340 .625

Our Price: $5.45

Image Product # Manufacturer Model Description
View Larger Image 533210G MOSSBERG 340BA, 340BB 12 x 40 .046 .465 .340 .625

Our Price: $5.45

Image Product # Manufacturer Model Description
View Larger Image 533210B MOSSBERG 341, 321B, 346B, 346BA, 321K, 340B, 340K, 320BA, 320B 12 x 40 .046 .465 .340 .625

Our Price: $5.45

Image Product # Manufacturer Model Description
View Larger Image 533210D NEW HAVEN 240K 12 x 40 .046 .465 .340 .625

Our Price: $5.45

Image Product # Manufacturer Model Description
View Larger Image 533210E WESTERNFIELD 830 12 x 40 .046 .465 .340 .625

Our Price: $5.45

Image Product # Manufacturer Model Description
View Larger Image 533210C WESTERNFIELD 832, 852 12 x 40 .046 .465 .340 .625

Our Price: $5.45

Image Product # Manufacturer Model Description
View Larger Image 533220A 12 x 40 .100 .465 .340 .625

Our Price: $5.45

Image Product # Manufacturer Model Description
View Larger Image 533220B HARRINGTON & RICHARDSON 150, 151 12 x 40 .100 .465 .340 .625

Our Price: $5.45