Seekins Precision IRMT-3 V3 Billet AR-15 Upper Receiver

Manufactured by Seekins Precision
SKU: SP0010900011
MPN: 10900011
Manufactured by Seekins Precision
2 Reviews

In Stock

Orders of non-FFL items will ship same day if ordered before 3:30pm CST (M-F). FFL orders will ship within 5 business days if transfer details are provided.

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The Seekins Precision IRMT billet upper receiver features a unique construction with critical areas receiving considerable reinforcement that will allow you to squeeze the greatest accuracy possible out of your build. The integrated SP3R V3 barrel nut allows for a near monolithic top rail. Pre-assembed with forward assist and port door.

  • Durable billet 7075-T6
  • Integral SP3R V3 barrel nut
  • Standard M4 feed ramps
  • Pre-installed forward assist and ejection port cover
  • Compatible with Seekins SP3R V3 rail system
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BrandSeekins Precision
Feed RampsM4
FinishHardcoat Anodized
Forward AssistAssembled with Forward Assist
ManufacturerSeekins Precision
Port DoorAssembled with Port Cover
Receiver Material7075-T6 Aluminum
T MarksUnmarked
California Prop 65 warning

 WARNING: This product can expose you to chemicals, which are known to the State of California to cause Cancer and Reproductive Harm. For more information go to

Ratings & Reviews

2 reviews

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  • 1 star
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Happy shooter


I'm really impressed with the quality, fit and finish of this upper. It came with the dust cover and forward assist installed, saving some assembly time. It's a good looking upper, especially when combined with the Seekins SP3Rv3 mod rail. I'd definitely buy again.

Great Transaction!


Even with a hiccup with my order (My fault) they were helpful and fast on the solution/turn around. I'll definitely order from these folks in the future!