Trijicon Flat Top Adapter

Trijicon Flat Top Adapter

Trijicon
MPN:
TA51
UPC:
719307300514
$69.69
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Description

The Trijicon Flat Top Adapter is a precision-machined mounting solution designed to seamlessly extend and convert your flat-top AR-platform rail for optimal optics positioning and co-witnessing flexibility.

  • Extends flat-top Picatinny rail for ideal optic eye relief and height
  • Machined from aircraft-grade aluminum for lightweight, durable performance
  • Compatible with standard MIL-STD-1913 Picatinny rail systems
  • Anodized finish resists corrosion, wear, and harsh field conditions
  • Secure, repeatable zero retention when mounting and remounting optics
  • Engineered to Trijicon's exacting quality and dimensional tolerances

Who This Is For

The Trijicon Flat Top Adapter is ideal for AR-15 and M16/M4-platform shooters who need to raise or extend their optic mounting position for proper eye relief, co-witnessing with iron sights, or to accommodate Trijicon ACOG, RMR, and other compatible optics. It suits competitive shooters, law enforcement professionals, and serious enthusiasts who demand reliable, repeatable performance from every piece of gear on their rifle.

Trijicon Flat Top Adapter – front three-quarter view Trijicon Flat Top Adapter – alternate angle showing Picatinny rail interface

Specifications

BrandTrijicon
ModelFlat Top Adapter (RPLTRTA51)
Compatible PlatformsAR-15, M16, M4 Flat-Top Receivers
Rail StandardMIL-STD-1913 Picatinny
MaterialAircraft-Grade Aluminum
FinishHard-Coat Anodized
Compatible OpticsTrijicon ACOG, RMR, and standard Picatinny-mount optics
Country of OriginUSA

Frequently Asked Questions

Which Trijicon optics is this adapter designed to work with?

The Trijicon Flat Top Adapter is primarily designed for use with Trijicon ACOG scopes and RMR red dot sights, allowing them to mount at the correct height and position on a flat-top AR-style receiver. It is also compatible with any optic or accessory featuring a standard MIL-STD-1913 Picatinny rail footprint.

Will this adapter fit any AR-15 or is it specific to certain manufacturers?

This adapter is compatible with any flat-top AR-15, M16, or M4-pattern upper receiver that features a standard MIL-STD-1913 Picatinny rail. Because the Picatinny rail standard is universal across the vast majority of AR-platform firearms, it should fit virtually any flat-top rifle regardless of manufacturer.

Does installing this adapter affect my zero when I remove and reinstall my optic?

The Trijicon Flat Top Adapter is engineered for repeatable, zero-retaining performance. When the adapter itself remains attached to the receiver, your optic's zero should be preserved through removal and reinstallation cycles, provided the optic's own mount is properly torqued each time. Always confirm zero after any change to your mounting system.