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Questions & Answers
How to SLIDE rear sight onto picatinny rails. VERY tight. Expert Answer

I suggest loosening up the set screw as much as needed.

by Brandon B, Gear Expert, October 20, 2021
Color:
Black
Condition:
New
Sight Position:
Rear
Gun Model:
AR-15
Gun Make:
AR Platform
Front Sight Color:
REAR SIGHT ONLY
Rear Sight Color:
Black

Code: 3FD-IRN-RS75-ARMS40L

MPN: ARMS40L

UPC: 2546117

List: $199.99Save $4.00
$195.99

Product Info for A.R.M.S., Inc. Low Profile Top Mounted Deployable Iron Sight

Sight, ARMS #40 Low Profile, Black 40Limage

Specifications for A.R.M.S., Inc. Low Profile Top Mounted Deployable Iron Sight:

Manufacturer: A.R.M.S., Inc.
Color: Black
Condition: New
Sight Mounting Orientation: Top Mounted
Sight Position: Rear
Gun Model: AR-15
Gun Make: AR Platform
Front Sight Color: REAR SIGHT ONLY
Rear Sight Color: Black
Deployable: Yes
Gun Type: Rifle
Hand: Ambidextrous
Mount Type: Picatinny
Attachment Type: Picatinny

Package Contents:

  • A.R.M.S., Inc. Low Profile Flip Up Rear Sight

A.R.M.S., Inc. Low Profile Top Mounted Deployable Iron Sight Orderable Models

List of Orderable Models

  • A.R.M.S., Inc. Low Profile Top Mounted Deployable Rear Sight, Black, ARMS40L , MPN: ARMS40L , UPC: 2546117 , Code: 3FD-IRN-RS75-ARMS40L

A.R.M.S., Inc. Low Profile Top Mounted Deployable Iron Sight Unavailable & Discontinued Models

List of Unorderable Models

  • USED, A.R.M.S., Inc. Low Profile Top Mounted Deployable Rear Sight, Black, ARMS40L , MPN: ARMS40L-EDEMO , Code: 3FD-IRN-RS75-ARMS40L-EDEMO-RE-B
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Last updated 2026-08-10 UTC.