Upgrades & Repairs


The roller-delayed specialists at Zenith Firearms now offer a comprehensive set of maintenance, repair, customization and DuraCoat application services for all makes and models of roller-delayed blowback firearms. As a holder of FFLs 7 and 10, and a Class 2 and 3 Special Occupational Taxpayer, Zenith is licensed to manufacture and service all NFA items.

For a $50 fee, Zenith will inspect your firearm and identify any maintenance-related or performance-impacting problems. General labor is $80 per hour, and the fixed prices of some of our most common services are below.


A3 Stock Modification

(includes refinishing the rails in HK Black SL Duracoat)


Trigger Enhancement

(tunes trigger to 4.5-5 lbs. and reduces take-up)


Barrel Replacement

(labor only)


HK Black DuraCoat Refinishing

(includes bead blasting and new phosphate)


Optics Rail Welding Service

(includes TIG-welding of full-size or shortened Picatinny optics rail and refinishing of entire gun)

Firearm Shipping Options

  1. You may have your local FFL ship us your firearm. We will ship the firearm back to the FFL at your expense. The cost of return shipping will be included in the final invoice.
  2. You may ship the firearm to us on your own via UPS or FedEx. If this option is chosen, you must comply with BATFE shipping regulations. Pistols and NFA firearms must be shipped next-day-air by UPS or FedEx. Non-NFA rifles may be shipped via ground service. Zenith Firearms will NOT accept packages that are shipped incorrectly according to their classification.
  3. You may choose to have Zenith Firearms provide the appropriate UPS shipping label. All shipping costs will be added to the invoice.
  4. Are you local to Staunton, Waynesboro, or Charlottesville, and in need of a reliable, professional gunsmith? Both Dominion Outdoors of Fishersville, VA, and Albemarle County Firearms of Charlottesville have agreed to serve as drop-off points for customers of the Zenith Custom Shop, enabling you to forgo the cost of shipping when you have Zenith service your firearm. You can call either establishment to discuss a drop off (Dominion: 540-337-9218; ACF: 434-973-0300), or just stop by during their business hours to transfer your firearm to them after completing our Gunsmithing Services Estimate Form.

IMPORTANT: Verify that your firearm is unloaded and that ammunition is not packed in the box before shipping to Zenith Firearms.


Fill out our Gunsmithing Service Estimate Form to start your order today.

zf_clarkZenith Custom Shop