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.

Shopping Cart
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
(56)
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
(35)
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
(52)
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
(25)
List: $14.95 $14.19
Best Rated Magpul Industries PMAG GEN M3 AR-15/M16/M4 Rifle Magazine w/Capacity Window, .223 Rem/5.56x45mm NATO, 30 Round, Medium 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, Medium Coyote Tan, 1 Pack, Polymer, MAG556-MCT-30RD
(52)
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, 30 Round, Medium 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, Medium Coyote Tan, 1 Pack, Polymer, MAG557-MCT-30RD
(35)
List: $14.95 $13.95 Save Up to 13%
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%
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
(11)
List: $26.99 $15.95 Save Up to 11%
Walker Defense Research 3 M-LOK Slot Length Nile Silicon Carbide M-LOK Rail Covers, 3 Pack, NILE-3-SLOT-3-PACK
Walker Defense Research 3 M-LOK Slot Length Nile Silicon Carbide M-LOK Rail Covers, 3 Pack, NILE-3-SLOT-3-PACK
(3)
List: $59.99 $57.99 Save Up to $2.00
Questions & Answers
Is this receiver T-marked? Expert Answer

Per the manufacturer, the YHM-100 has M4 Style feed ramps and T Markings.

by Corey K., Gear Expert, July 6, 2019
Customer Reviews
Helpful Negative Review
Yankee Hill Machine Yhm A3 by Jeromy, Verified Owner, May 5, 2020
So my Yankee Hill Machine Yhm A3 Upper Receiver Assemblycame in today. My first reaction is this is nice minus the rough finish. The Machining is good, its T-marked. I slipped my Yankee Hill Barrel on it and check the M4 speed ramps, it all matched u...
Read More...
2/2 found this helpful
Most Recent Reviews
Im sure its reliable but its ugly…. by Florida Man, Verified Owner, September 15, 2022
Not sure if it was shipping from Optics Planet because the box was beat to heck or if it was the finish from Yankee Hill but this might the most discolored ugliest upper I’ve ever bought. Luckily it’s going on my ugly basic AR, nothing special or I’d...
Read More...
2/2 found this helpful
Read All 2 Reviews
Color:
Black
Finish:
Anodized
Fabric/Material:
Aluminum
Caliber:
5.56x45mm NATO
Gun Model:
AR-15
Additional Features:
Forward Assist

Code: YHM-UPR-YHM100

MPN: YHM100

UPC: 816701011319

List: $174.95Save 23%
$133.99

ATTENTION! We currently do not ship this product to P.O. Boxes, AK, CA, CT, DE, HI, MA, NJ, NY, U.S. Territories, or select Colorado locations. Please see our policies for more information or a detailed list of locations.

Product Info for Yankee Hill Machine Yhm A3 Upper Receiver Assembly For Ar-15

The Yankee Hill Machine Yhm A3 Upper Receiver Assembly For Ar-15 was made to be the best product for anyone trying to find an exceptional choice..image

Developed by using some of the most robust and long lasting substances in existence, these AR15 Upper Receivers by Yankee Hill Machine provides you with an item which will give you years of stability.

Yankee Hill Machine has been making superior quality merchandise for a very long time, and the Yankee Hill Machine Yhm A3 Upper Receiver Assembly For Ar-15 is their very own means of revealing exactly how much they care.

At OpticsPlanet, we make it our obligation to get the perfect product for all of your needs, and presenting the Yankee Hill Machine Yhm A3 Upper Receiver Assembly For Ar-15 is something that we're pleased to offer.

WARNING: California`s Proposition 65

Specifications for Yankee Hill Machine Yhm A3 Upper Receiver Assembly For Ar-15:

Type/color: Upper receiver
Size/finish: W/dust cover & forward assist
Material: Aluminum
Ar-15 accessory: Y
Other features: M4 style feed ramps, accepts standard upper receiver parts, accepts mil-spec lower receivers

Package Contents:

  • Yankee Hill Machine Yhm A3 Upper Receiver Assembly For Ar-15

Yankee Hill Machine Yhm A3 Upper Receiver Assembly For Ar-15 Orderable Models

List of Orderable Models

  • Yankee Hill Machine Co A3 Upper Receiver, Fits AR15, 7075-T6 Aluminum, Anodized Finish, Black YHM-100 , MPN: YHM100 , UPC: 816701011319 , Code: YHM-UPR-YHM100
Compare (0)
Last updated 2026-06-26 UTC.