SKU LIP|GT13833 Category

Gemtech GVAC Upper Receiver w/Bolt Group Black 5.56mm Nato 16.1″ Barrel (NO CHARGING HANDLE)

Gemtech GVAC Upper Receiver w/Bolt Group Black 5.56mm Nato 16.1″ Barrel (NO CHARGING HANDLE)

$801.00

4 in stock

Introducing the new GVAC system from Gemtech. Significantly reduce the amount of gas blowback you'll experience wwhen shooting suppressed with its patented design. The re-imagined barrel profile enhanced bolt carrier profile enhanced bolt carrier group and ETM muzzle device maximize peformance so nothing holds you back. Redefine suppressed shooting with the GVAC system.

  • UPPER RECEIVER – Mil-Spec with Indexing Marks and M4 Feed Ramps. 7075-T6 Aluminum Type III Hard Coat Anodized
  • BARREL – 4150CMV Steel Stress Relieved Armornite Treated 1:8 Twist 5R Rifled GVAC Profile Nickle Boron Coated  barrel Extension 1/2X28 TPI Muzzle Threads
  • GAS SYSTEM – Pinned Low-Pro GVAC Gas Block 4140CM Steel Mid-Length GVAC Direct-Impingement
  • MUZZLE DEVICE – Gemtech ETM Flash Hider 4140CM Steel
  • BOLT CARRIER GROUP – Carpenter 158 steel bolt 8620 Steel Carrier Mil-Spec MP Tested Mag-Phos Finish Chrome Lined Properly staked Gas Key Enhanced reliability bolt carrier and chrome firing pin.
  • HANDGUARD – 15” Midwest Industries Combat M-LOK Free-Float SevenSided M-LOK hand guard. Continuous MIL-STD 1913 Picatinny Top Rail Integrated QD sling sockets. Machined from 6061-T6 Aluminum and Type III Hard Coat Anodized.

Additional information

Upc

022188894615

Manufacturer

Gemtech

Manufacturer part number

13833

Barrel length

16.1"

Length

30

Package height

4.0

Package width

4.0

Product type

Accessory-Uppers

Rate of twist

1-in-8"

Shipping weight

5.3

FAQ

BJ Firearms LLC is a federally licensed firearms business focused on providing quality firearms, accessories, and related services while promoting responsible ownership, education, and community engagement.

The company was founded to serve firearm enthusiasts with knowledgeable service, real-world experience, and a commitment to professionalism and safety.

We focus on real experience, personalized service, hands-on product knowledge, and community involvement — not just sales. Our goal is to help customers make informed decisions and feel confident with their equipment.

Yes. We operate as a federally licensed firearms dealer (FFL), following all applicable federal, state, and local regulations.

Yes. We partner with trusted suppliers to provide quality products and reliable sourcing.

Yes. We partner with content creators and industry professionals to provide real-world insights and experiences.

We work with everyone — from first-time buyers to experienced enthusiasts. Education and guidance are a big part of what we do.

We offer firearms, accessories, gear, and related equipment depending on availability and customer needs.

Yes. We help customers evaluate their needs, experience level, and intended use to find the right fit.

Yes. Depending on the request, we can help source specific products or assist with custom configurations.

Yes. We actively engage in hands-on experiences, demonstrations, and community-related firearm activities when possible.

Yes. We support content that helps people learn about equipment, safety, and responsible firearm ownership.

Social Media Posts

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Customer Reviews

“Outstanding customer service.” I had a lot of questions before buying, and they walked me through everything without pressure. Super knowledgeable and easy to work with. You can tell they actually care about their customers.
Verified Customer
“Best experience I’ve had buying gear.” Professional, responsive, and honest. They helped me choose exactly what I needed without overselling anything. I’ll definitely be coming back.
Verified Customer
“Great people, great service.” Very down-to-earth and easy to talk to. They explain things clearly and make sure you understand your options. Highly recommend, especially if you’re new.
Verified customer

BJ FIREARMS LLC

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