VN-MUR: VULCAN Modular Upper Receiver

• Aircraft-grade aluminum construction
• 7075 Forging
• Stress relieved, heat treated, aged twice and cryogenic treated
• Hard coat anodized, black per MIL-A-8625 TYPE III Class 2
• Precision machined and finished by hand
• Bore coated with dry film lube over the anodized surface
• Compatible with all Mil-Spec AR-15 parts and accessories
• Available with (MUR-1A) or without forward assist (MUR-1S)
• M4 feed ramps

AVAILABLE IN THE FOLLOWING COLORS:

Black:

• Weight: MUR-1A- 9.80 oz , MUR-1S- 8.70 oz
• Length: 7.657 inches
• Height overall: 2.121 inches

1. What kind of mounting block should I use?

We recommend that you use the Geissele Reaction Rod for installation. Damage could incur if you use clamp style mounting blocks or blocks that do not support the upper internally. This could void your warranty.

http://geissele.com/reaction-rod.html

2. How do you remove the forward assist to install a custom dust cover?

Due to our Lifetime Warranty, we advise that you not remove or attempt to remove your forward assist. Our Lifetime Warranty covers all of our products as long as they are not modified in any way (i.e. disassembly, Cerakote, painted, Durakote, etc.). We do offer a service in house that will maintain your Lifetime Warranty. Please contact us to arrange this service.

3. Is your upper forged or billet?

All of our uppers are made from forgings.

4. Does the barrel extension on your upper require thermal fitting?

No, our uppers are made to mil-spec tolerances to ensure fitment with all barrels including those with oversized extensions.

5. Do you make a MUR that is compatible with .308?

We do not current have a .308 compatible MUR available; however, our Research and Development team is exploring this area.

6. What type of coating is applied to the MUR-1A-T Tan MUR and Foliage Green? 

We use KG Industries GunKote on these uppers.

Tan GunKote 2404F

Foliage Green GunKote 2416F