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Onyx Arms LLC

GunsmithGun shopAmmo retailer

11665 Lower Seguin Rd. Suite 101, Schertz, TX 78154

Profile updated October 18, 2026

What they offer

Gunsmith

Work
Custom builds, engraving, gunsmithing, machining, optics mounting and sight installation

Gun shop

Transfers
FFL transfers

Prices

As published by the business.

  • FFL Transfer $40 per firearm
  • A2 Rear Sight Installation $20 per service
  • Feed Ramp Polishing $25 per service
  • Gas Block Set Screw Dimple $25 per service
  • 20-minute storefront consultation appointment $35 per appointment · Fee is applied toward in-store item purchases.
  • Optic Mounting & Leveling $40 per service
  • Pistol Sight Installation $40 per service
  • Upper Receiver Lapping $50 per service
  • FSP Install Service $125 per service
  • Barrel Threading Service $155 per service
  • HK416 Laser Engrave Labor $160 per service
  • DeadAir Hub Conversion $300 per service
  • AKM Build Service (starting base price) $450 per service · Base price starting. Price can vary depending on type of kit, any demill needing done, additional work or machining etc.

Near Schertz

The nearest gunsmiths USA Arms lists, by distance.

Sources and corrections

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