+1-800-504-5897 Help Center Check Order Status
About Us Policies Reviews How To
Free Shipping & Free Returns*

FREE SHIPPING on Over 250,000 Products

Shop now and get Free Value Shipping on most orders over $49 to the contiguous 48 states, DC, and to all U.S. Military APO/FPO/DPO addresses.

Enjoy our FREE RETURNS

We want to ensure that making a return is as easy and hassle-free as possible! If for any reason you are not satisfied with your purchase, simply return the item within 30 days of receipt, and we'll cover the cost of return shipping. Learn more about our Return Policy.

  • Entire Store
  • ...
  • Apparel & Footwear
  • Astronomy
  • Everything Else
  • Eyewear
  • Hunting Gear
  • Lab Equipment
  • Military Gear
  • Outdoor Gear
  • Photography Equipment
  • Police, EMS & Fire
  • Shooting
  • Sport Optics
  • Sports & Hobbies
TIP
Shopping Cart

Guntec USA AR-15 Upper Receiver Assembly Kit Up to 26% Off w/ Free S&H — 15 models

Guntec USA AR-15 Upper Receiver Assembly Kit, Anodized Gold, GT-URK-G3-GOLD
GUNTEC USA AR15 Upper Receiver Assembly Kit GT-URK
Guntec USA AR-15 Upper Receiver Assembly Kit, Anodized Grey, GT-URK-G3-GREY
Guntec USA AR-15 Upper Receiver Assembly Kit, Anodized Purple, GT-URK-G3-PURPLE
Guntec USA AR-15 Upper Receiver Assembly Kit, Anodized Green, GT-URK-G3-GREEN
Guntec USA AR-15 Upper Receiver Assembly Kit, Anodized Blue, GT-URK-G3-BLUE
Guntec USA AR-15 Upper Receiver Assembly Kit, Anodized Black, GT-URK-G3-BLACK
Guntec USA AR-15 Upper Receiver Assembly Kit, Anodized Clear, GT-URK-G3-CLEAR
Guntec USA AR-15 Upper Receiver Assembly Kit, Gen 3 Trap Door Assembly, Cerakote Flat Dark Earth, GT-URK-G3-FDE
Guntec USA AR-15 Upper Receiver Assembly Kit, Black Chrome, GT-URK-G3-BC
Guntec USA AR-15 Upper Receiver Assembly Kit, Matte Rainbow Pvd Coated, GT-URK-G3-M-RPVD
Guntec USA AR-15 Upper Receiver Assembly Kit, Gloss Rainbow Pvd Coated, GT-URK-G3-RPVD
Guntec USA AR-15 Upper Receiver Assembly Kit, Chrome, GT-URK-G3-C
Guntec USA AR-15 Upper Receiver Assembly Kit, Gold Plated, GT-URK-G3-GP
GUNTEC USA AR-15 Upper Receiver Assembly Kit, Black, Nickel, Red
Guntec USA AR-15 Upper Receiver Assembly Kit, Gloss Rainbow Pvd Coated, GT-URK-G3-RPVD
Guntec USA AR-15 Upper Receiver Assembly Kit, Anodized Gold, GT-URK-G3-GOLD
1 of 16 images
Guntec USA AR-15 Upper Receiver Assembly Kit, Anodized Gold, GT-URK-G3-GOLD
GUNTEC USA AR15 Upper Receiver Assembly Kit GT-URK
2 of 16 images
GUNTEC USA AR15 Upper Receiver Assembly Kit GT-URK
Guntec USA AR-15 Upper Receiver Assembly Kit, Anodized Grey, GT-URK-G3-GREY
3 of 16 images
Guntec USA AR-15 Upper Receiver Assembly Kit, Anodized Grey, GT-URK-G3-GREY
Guntec USA AR-15 Upper Receiver Assembly Kit, Anodized Purple, GT-URK-G3-PURPLE
4 of 16 images
Guntec USA AR-15 Upper Receiver Assembly Kit, Anodized Purple, GT-URK-G3-PURPLE
Guntec USA AR-15 Upper Receiver Assembly Kit, Anodized Green, GT-URK-G3-GREEN
5 of 16 images
Guntec USA AR-15 Upper Receiver Assembly Kit, Anodized Green, GT-URK-G3-GREEN
Guntec USA AR-15 Upper Receiver Assembly Kit, Anodized Blue, GT-URK-G3-BLUE
6 of 16 images
Guntec USA AR-15 Upper Receiver Assembly Kit, Anodized Blue, GT-URK-G3-BLUE
Guntec USA AR-15 Upper Receiver Assembly Kit, Anodized Black, GT-URK-G3-BLACK
7 of 16 images
Guntec USA AR-15 Upper Receiver Assembly Kit, Anodized Black, GT-URK-G3-BLACK
Guntec USA AR-15 Upper Receiver Assembly Kit, Anodized Clear, GT-URK-G3-CLEAR
8 of 16 images
Guntec USA AR-15 Upper Receiver Assembly Kit, Anodized Clear, GT-URK-G3-CLEAR
Guntec USA AR-15 Upper Receiver Assembly Kit, Gen 3 Trap Door Assembly, Cerakote Flat Dark Earth, GT-URK-G3-FDE
9 of 16 images
Guntec USA AR-15 Upper Receiver Assembly Kit, Gen 3 Trap Door Assembly, Cerakote Flat Dark Earth, GT-URK-G3-FDE
Guntec USA AR-15 Upper Receiver Assembly Kit, Black Chrome, GT-URK-G3-BC
10 of 16 images
Guntec USA AR-15 Upper Receiver Assembly Kit, Black Chrome, GT-URK-G3-BC
Guntec USA AR-15 Upper Receiver Assembly Kit, Matte Rainbow Pvd Coated, GT-URK-G3-M-RPVD
11 of 16 images
Guntec USA AR-15 Upper Receiver Assembly Kit, Matte Rainbow Pvd Coated, GT-URK-G3-M-RPVD
Guntec USA AR-15 Upper Receiver Assembly Kit, Gloss Rainbow Pvd Coated, GT-URK-G3-RPVD
12 of 16 images
Guntec USA AR-15 Upper Receiver Assembly Kit, Gloss Rainbow Pvd Coated, GT-URK-G3-RPVD
Guntec USA AR-15 Upper Receiver Assembly Kit, Chrome, GT-URK-G3-C
13 of 16 images
Guntec USA AR-15 Upper Receiver Assembly Kit, Chrome, GT-URK-G3-C
Guntec USA AR-15 Upper Receiver Assembly Kit, Gold Plated, GT-URK-G3-GP
14 of 16 images
Guntec USA AR-15 Upper Receiver Assembly Kit, Gold Plated, GT-URK-G3-GP
GUNTEC USA AR-15 Upper Receiver Assembly Kit, Black, Nickel, Red
15 of 16 images
GUNTEC USA AR-15 Upper Receiver Assembly Kit, Black, Nickel, Red
Guntec USA AR-15 Upper Receiver Assembly Kit, Gloss Rainbow Pvd Coated, GT-URK-G3-RPVD
16 of 16 images
Guntec USA AR-15 Upper Receiver Assembly Kit, Gloss Rainbow Pvd Coated, GT-URK-G3-RPVD

Tap Tap to Zoom

Government Export Restriction Government Export Restriction
Government Restriction Government Restriction
You May Also Like
Best Rated Magpul Industries PMAG GEN M2 MOE AR-15/M16/M4 Rifle Magazine, .223 Rem/5.56x45mm NATO, 30 Round, Black, 1 Pack, Polymer, MGMPI571BLK-30RD
Magpul Industries PMAG GEN M2 MOE AR-15/M16/M4 Rifle Magazine, .223 Rem/5.56x45mm NATO, 30 Round, Black, 1 Pack, Polymer, MGMPI571BLK-30RD
(53)
List: $12.95 $11.95 Save Up to $1.00
Best Rated Magpul Industries PMAG GEN M3 AR-15/M16/M4 Rifle Magazine, .223 Rem/5.56x45mm NATO, 30 Round, Black, 1 Pack, Polymer, MGMPI557BLK-30RD
Magpul Industries PMAG GEN M3 AR-15/M16/M4 Rifle Magazine, .223 Rem/5.56x45mm NATO, 30 Round, Black, 1 Pack, Polymer, MGMPI557BLK-30RD
(34)
List: $14.95 $13.95 Save Up to $1.00
Best Rated Magpul Industries PMAG GEN M3 AR-15/M16/M4 Rifle Magazine w/Capacity Window, .223 Rem/5.56x45mm NATO, 30 Round, Black, 1 Pack, Polymer, MGMPI556BLK-30RD
Magpul Industries PMAG GEN M3 AR-15/M16/M4 Rifle Magazine w/Capacity Window, .223 Rem/5.56x45mm NATO, 30 Round, Black, 1 Pack, Polymer, MGMPI556BLK-30RD
(46)
List: $17.95 $16.95 Save Up to $1.00
Best Rated Magpul Industries PMAG GEN M3 AR-15/M16/M4 Rifle Magazine, .223 Rem/5.56x45mm NATO, 20 Round, Black, 1 Pack, Polymer, MAG560BLK-20RD
Magpul Industries PMAG GEN M3 AR-15/M16/M4 Rifle Magazine, .223 Rem/5.56x45mm NATO, 20 Round, Black, 1 Pack, Polymer, MAG560BLK-20RD
(24)
List: $14.95 $14.19
Best Rated Magpul Industries PMAG GEN M3 AR-15/M16/M4 Rifle Magazine, .223 Rem/5.56x45mm NATO, 30 Round, Coyote Tan, 1 Pack, Polymer, MAG557-MCT-30RD
Magpul Industries PMAG GEN M3 AR-15/M16/M4 Rifle Magazine, .223 Rem/5.56x45mm NATO, 30 Round, Coyote Tan, 1 Pack, Polymer, MAG557-MCT-30RD
(34)
List: $14.95 $13.95 Save Up to $1.00
Best Rated Magpul Industries PMAG GEN M3 AR-15/M16/M4 Rifle Magazine w/Capacity Window, .223 Rem/5.56x45mm NATO, 30 Round, Coyote Tan, 1 Pack, Polymer, MAG556-MCT-30RD
Magpul Industries PMAG GEN M3 AR-15/M16/M4 Rifle Magazine w/Capacity Window, .223 Rem/5.56x45mm NATO, 30 Round, Coyote Tan, 1 Pack, Polymer, MAG556-MCT-30RD
(46)
List: $17.95 $16.95 Save Up to $1.00
Best Rated Magpul Industries PMAG GEN M2 MOE AR-15/M16/M4 Rifle Magazine w/Capacity Window, .223 Rem/5.56x45mm NATO, 30 Round, Black, 1 Pack, Polymer, MGMPI570BLK-30RD
Magpul Industries PMAG GEN M2 MOE AR-15/M16/M4 Rifle Magazine w/Capacity Window, .223 Rem/5.56x45mm NATO, 30 Round, Black, 1 Pack, Polymer, MGMPI570BLK-30RD
(12)
List: $15.95 $14.95 Save Up to $1.00
Best Rated Strike Industries AR-15 .223 Remington/5.56 NATO Rifle Magazine, 33 Round, Smoke Gray, 1 Pack, Polymer, Smoke, 0, SI-AR-MAG-33RD
Strike Industries AR-15 .223 Remington/5.56 NATO Rifle Magazine, 33 Round, Smoke Gray, 1 Pack, Polymer, Smoke, 0, SI-AR-MAG-33RD
(10)
List: $26.99 $17.99 Save Up to 33%
Best Rated Magpul Industries PMAG GEN M3 AR-15/M16/M4 Rifle Magazine, .223 Remington, 40 Round, Black, 1 Pack, Polymer, MGMPI233BLK-40RD
Magpul Industries PMAG GEN M3 AR-15/M16/M4 Rifle Magazine, .223 Remington, 40 Round, Black, 1 Pack, Polymer, MGMPI233BLK-40RD
(12)
List: $22.95 $20.45 Save Up to 11%
Blazin' Deal TRYBE Defense Cowl Induction Muzzle Brake, 5.56/.223 Remington, 5/8x24, Black, TRBCIB55658x24
TRYBE Defense Cowl Induction Muzzle Brake, 5.56/.223 Remington, 5/8x24, Black, TRBCIB55658x24
(47)
List: $132.99 $53.28 Save Up to 60%
Questions & Answers
What holds the door closed? It is threaded put not is in the catch. Expert Answer

Please email us at techsales@opticsplanet.com regarding your question.

by Hunter, Gear Expert, June 27, 2023
why does the anodized group the charge handle look more pink than red, also the ceracote group also looks more pink than red? Expert Answer

The products are labeled red and should be red. The image provided by the manufacturer may be a little lighter in color because of the way the photo was taken.

by Bill, Gear Expert, November 5, 2020
View All Q&A You Have a Question? Ask!
Customer Reviews
Most Recent Reviews
Not very good quality by koetnic, Verified Owner, March 3, 2021
Colors don't match other red pars. Its more of a pinkish red. Its basically your cheap mil spec parts painted red, and they litterally look just painted.They scratch pretty easy. They are cheap so the do have that coing for them but thats about it
Read 1 Review
13% OFF AR Parts
On Sale

13% OFF AR Parts + 2% Bucks

See promotion details.
ARPARTYClick to Copy Coupon Code
Eligible models will have a savings offer and the coupon code to use below. Add the item to your cart and enter coupon code for savings on that select model! Limited time only. Cannot be combined with other promotions or offers.
Show In Stock Only
15 Models Available

Show with deals only:

Coupon Available
On Sale
Color
All
Finish
All
Additional Features
All
Search
Click to select this item for your bundle offer!

Buy Together and Save

As low as $177.52
You Save Up to 35%
OP Bucks$3.12

Product Info for Guntec USA AR-15 Upper Receiver Assembly Kit

Forward Assist Assembly 5.56 Charging Handle 5.56 Trap Door Assemblyimage

Specifications for Guntec USA AR-15 Upper Receiver Assembly Kit:

Manufacturer: Guntec USA
Fabric/Material: T6 Aluminum
Gun Make: AR Platform
Gun Model: AR-15
Weight: 10 oz

Features of Guntec USA AR-15 Upper Receiver Assembly Kit

  • 5.56 Trap Door Assembly
  • Forward Assist Assembly
  • 5.56 Charging Handle

Package Contents:

  • Guntec USA AR-15 Upper Receiver Assembly Kit

What firearm models does the manufacturer say Guntec USA AR-15 Upper Receiver Assembly Kit is compatible with?

The manufacturer says that Guntec USA AR-15 Upper Receiver Assembly Kit is compatible with AR-15

Guntec USA AR-15 Upper Receiver Assembly Kit Orderable Models

List of Orderable Models

  • Guntec USA AR-15 Upper Receiver Assembly Kit, GT-URK , MPN: GT-URK , Code: 2AH-UPK-URURUK-GT-URK
  • Guntec USA AR-15 Upper Receiver Assembly Kit, Anodized Gold, GT-URK-G3-GOLD , MPN: GT-URK-G3-GOLD , UPC: 752574661810 , Code: 2AH-UPK-URURUK-GT-URK-G3-GOLD
  • Guntec USA AR-15 Upper Receiver Assembly Kit, Anodized Grey, GT-URK-G3-GREY , MPN: GT-URK-G3-GREY , UPC: 752574661841 , Code: 2AH-UPK-URURUK-GT-URK-G3-GREY
  • Guntec USA AR-15 Upper Receiver Assembly Kit, Anodized Purple, GT-URK-G3-PURPLE , MPN: GT-URK-G3-PURPLE , UPC: 752574661858 , Code: 2AH-UPK-URURUK-GT-URK-G3-PURPLE
  • Guntec USA AR-15 Upper Receiver Assembly Kit, Black Chrome, GT-URK-G3-BC , MPN: GT-URK-G3-BC , UPC: 752574661902 , Code: 2AH-UPK-URURUK-GT-URK-G3-BC
  • Guntec USA AR-15 Upper Receiver Assembly Kit, Anodized Green, GT-URK-G3-GREEN , MPN: GT-URK-G3-GREEN , UPC: 752574661865 , Code: 2AH-UPK-URURUK-GT-URK-G3-GREEN
  • Guntec USA AR-15 Upper Receiver Assembly Kit, Anodized Blue, GT-URK-G3-BLUE , MPN: GT-URK-G3-BLUE , UPC: 752574661827 , Code: 2AH-UPK-URURUK-GT-URK-G3-BLUE
  • Guntec USA AR-15 Upper Receiver Assembly Kit, Anodized Black, GT-URK-G3-BLACK , MPN: GT-URK-G3-BLACK , UPC: 752574661872 , Code: 2AH-UPK-URURUK-GT-URK-G3-BLACK
  • Guntec USA AR-15 Upper Receiver Assembly Kit, Anodized Clear, GT-URK-G3-CLEAR , MPN: GT-URK-G3-CLEAR , UPC: 752574661834 , Code: 2AH-UPK-URURUK-GT-URK-G3-CLEAR
  • Guntec USA AR-15 Upper Receiver Assembly Kit, Gen 3 Trap Door Assembly, Cerakote Flat Dark Earth, GT-URK-G3-FDE , MPN: GT-URK-G3-FDE , UPC: 752574670935 , Code: 2AH-UPK-URURUK-GT-URK-G3-FDE
  • Guntec USA AR-15 Upper Receiver Assembly Kit, Trap Door Assembly, Cerakote Flat Dark Earth, GT-URK-FDE , MPN: GT-URK-FDE , UPC: 709016728907 , Code: 2AH-UPK-URURUK-GT-URK-FDE
  • Guntec USA AR-15 Upper Receiver Assembly Kit, Matte Rainbow Pvd Coated, GT-URK-G3-M-RPVD , MPN: GT-URK-G3-M-RPVD , UPC: 752574661926 , Code: 2AH-UPK-URURUK-GT-URK-G3-M-RPVD
  • Guntec USA AR-15 Upper Receiver Assembly Kit, Gloss Rainbow Pvd Coated, GT-URK-G3-RPVD , MPN: GT-URK-G3-RPVD , UPC: 752574661919 , Code: 2AH-UPK-URURUK-GT-URK-G3-RPVD
  • Guntec USA AR-15 Upper Receiver Assembly Kit, Chrome, GT-URK-G3-C , MPN: GT-URK-G3-C , UPC: 752574661896 , Code: 2AH-UPK-URURUK-GT-URK-G3-C
  • Guntec USA AR-15 Upper Receiver Assembly Kit, Gold Plated, GT-URK-G3-GP , MPN: GT-URK-G3-GP , UPC: 752574661889 , Code: 2AH-UPK-URURUK-GT-URK-G3-GP

Guntec USA AR-15 Upper Receiver Assembly Kit Unavailable & Discontinued Models

List of Unorderable Models

  • Guntec USA AR-15 Upper Receiver Assembly Kit, Red Anodized, GT-URK-RED , MPN: GT-URK-RED , UPC: 709016728914 , Code: 2AH-UPK-URURUK-GT-URK-RED
  • Guntec USA AR-15 Upper Receiver Assembly Kit, Forward Assist/Charging Handle/Ejection Port Cover, Cerakote Red, GT-URK-CRED , MPN: GT-URK-CRED , Code: 2AH-UPK-URURUK-GT-URK-CRED
  • Guntec USA Upper Receiver Assembly Kit, AR-15, Forward Assist/Charging Handle/Ejection Port Cover, Nickel, GT-URK-NB , MPN: GT-URK-NBGT-URK-NB , Code: 2AH-UPK-URURUK-GT-URK-NB
Compare (0)
1 item has been added
Add at least two items to compare