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AR15 Upper Receiver Parts for Sale at Northern Rifleman
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RB-A005 UTG Model 4 AR15 Receiver Wedge

• Fits Near Your Takedown Pin & Keeps the Upper Section Snug and Tight Against the Lower
• Increases Accuracy, Decreases Vibration and Prevents Wear

Material: Rubber
Weight: 0.1 oz
Color: Red

List Price: $1.99
Our Price: $0.75
Savings: $1.24
808 in stock!
MNT-RS08S3 UTG .83 High 3-Slot Medium Compact Riser

• New Gen. Riser Mount for Rifles with Picatinny/Weaver Rail
• 1.58" Long Picatinny Rail with 3 Slots
• Side Plate with Spring Tension for Quick Easy Installation
• Precision Made from Aircraft Aluminum with Matte Black Anodize
• 0.83" Saddle Height with See-through Design

MSRP $12.97
Our Price: $6.50
Savings: $6.47
280 in stock!
MT-RSX5S UTG Super Slim Picatinny Riser Mount MNT .5" Height 3 Slots

• UTG Super Slim Picatinny Riser Mount, 0.5" Saddle Height, 3 Slots, 1.57" in Length
• A Fresh New Look Precision CNC Machined from 6061-T6 Aircraft Grade Aluminum and Finished in a Matte Black Anodize
• Distinctive Scalloped Picatinny Slots for Snag Free Accessory Mounting
• Continuous Rail Edge Design Allows the Installation of Multiple Riser Mounts Side by Side to Form One Continuous Picatinny Rail
• Utilizes Locking Torx Screws and Square-shaped Integral Recoil Stops for a Secure Zero Hold
• 1.57" in Length with a 0.5" Saddle Height and 3 Picatinny Slots for Accommodate Many Different Optics
• Significant Lightening Cuts Massively Reduce Weight Resulting in a Fully Capable, Light Weight, and Aesthetically Pleasing Picatinny Riser Mount
• Includes T20 Torx Allen Wrench for a Simple and Friendly Installation

MSRP $12.97
Our Price: $6.50
Savings: $6.47
147 in stock!
UR-05A Luth AR Ejection Port Cover Assembly

Luth AR Ejection Port Cover Assembly

MSRP $6.99
Our Price: $6.50
Savings: $0.49
1499 in stock!
YHMSHIM-3102-SET Yankee Hill Barrel Shim Set 1/2" Inside Diameter

Barrel Shim Set to be used to correctly orient a timed muzzle device. This set is used with our 5.56mm Q.D. Muzzle Brakes. This shim kit has an inner diameter of 1/2"

SPECIFICATIONS
Included with this shim kit are shims with the following thicknesses:
- 2x 0.002"
- 3x 0.005"
- 1x 0.020"
- This shim kit has an inner diameter of 1/2"

List Price: $7.75
Our Price: $7.00
Savings: $0.75
425 in stock!
MNT-RS10S3 UTG 1 High 3-Slot High Compact Riser

• New Gen. Riser Mount for Rifles with Picatinny/Weaver Rail
• 1.6" Long Picatinny Rail with 3 Slots
• Side Plate with Spring Tension for Quick Easy Installation
• Precision Made from Aircraft Aluminum with Matte Black Anodizing
• 1.0" Saddle Height with See-through Design

MSRP $12.97
Our Price: $7.25
Savings: $5.72
202 in stock!
MT-RSX1S UTG 1" Super Slim Picatinny Riser Mount 3 Slot

• A Fresh New Look Precision CNC Machined from 6061-T6 Aircraft Grade Aluminum and Finished in a Matte Black Anodize
• Distinctive Scalloped Picatinny Slots for Snag Free Accessory Mounting
• Continuous Rail Edge Design Allows the Installation of Multiple Riser Mounts Side by Side to Form One Continuous Picatinny Rail
• Utilizes Locking Torx Screws and Square-shaped Integral Recoil Stops for a Secure Zero Hold
• 1.57" in Length with a 1" Saddle Height and 3 Picatinny Slots to Accommodate a Wide Variety of Different Optics
• Significant Lightening Cuts Massively Reduce Weight Resulting in a Fully Capable, Lightweight, and Aesthetically Pleasing Picatinny Riser Mount
• Includes a T20 Torx Wrench for a Simple and Friendly Installation

MSRP $12.97
Our Price: $7.50
Savings: $5.47
400 in stock!
403-LT-BLK Magpul MOE Scout Mount Left Black

Designed to attach directly to legacy MOE Hand Guards (non M-LOK®), the Scout Mount allows the use of Surefire® Scout Light® Weaponlights and many 1913 Picatinny mounted lights. Made from a proprietary reinforced composite for enhanced strength and durability while remaining lightweight. Optimized for firearms with a factory A2 front sight base*, the Scout Mount features a streamlined design to reduce snagging and position the light as close to the bore centerline as possible.

All hardware necessary for attachment to our prior generation MOE hand guards and forends or for directly affixing a Scout Light is included. Models are available to position the light high at 11 o'clock (LT, Left side model) or one o'clock (RT, Right side model).

Made in the USA.

List Price: $9.95
Our Price: $7.50
Savings: $2.45
233 in stock!
403-RT-BLK Magpul MOE Scout Mount Right Black

Designed to attach directly to legacy MOE Hand Guards (non M-LOK®), the Scout Mount allows the use of Surefire® Scout Light® Weaponlights and many 1913 Picatinny mounted lights. Made from a proprietary reinforced composite for enhanced strength and durability while remaining lightweight. Optimized for firearms with a factory A2 front sight base*, the Scout Mount features a streamlined design to reduce snagging and position the light as close to the bore centerline as possible.

All hardware necessary for attachment to our prior generation MOE hand guards and forends or for directly affixing a Scout Light is included. Models are available to position the light high at 11 o'clock (LT, Left side model) or one o'clock (RT, Right side model).

Made in the USA.

List Price: $9.95
Our Price: $7.50
Savings: $2.45
286 in stock!
MAR009 Tacfire AR15 Gas Tube - Pistol Length

Gas Tube - Pistol Length

Pistol Length Gas Tube for AR-15.

MSRP $14.99
Our Price: $14.99
Online Sale Price $7.99
Savings: $7.00
2 in stock!
RBTTKSDC UTG Quick Install Cover 223/556 Black

• Matte Black Impact and Heat Resistant Polymer Construction with Steel Spring-loaded Detent
• Patented Tool-free Design Quickly Installs Without Having to Remove The Handguard Prior
• Compatible with all .223/5.56 Mil-spec. and Most Billet Upper Receivers

Material: Polymer
Height: 0.91"
Length : 3.3"
Weight: 0.6 oz
Color: Black

List Price: $11.97
Our Price: $8.25
Savings: $3.72
991 in stock!
SED7003 Spike's Ejection Port Cover Pirate

We offer our standard ejection port door or if you want to customize your rifle we have a selection of custom engravings for you to choose from.

Engraved w/ Pirate and Arrgh

Mil-Spec Ejection Port Door
Mil-Spec Heavy Phosphate Coating
Weight: .50oz

List Price: $9.95
Our Price: $9.50
Savings: $0.45
52 in stock!
SED7005 Spike's Ejection Port Cover Punisher

We offer our standard ejection port door or if you want to customize your rifle we have a selection of custom engravings for you to choose from.

Engraved w/ Punisher and Flag

Mil-Spec Ejection Port Door
Mil-Spec Heavy Phosphate Coating
Weight: .50oz

List Price: $9.95
Our Price: $9.50
Savings: $0.45
162 in stock!
SED7007 Spike's Ejection Port Cover Zombie

We offer our standard ejection port door or if you want to customize your rifle we have a selection of custom engravings for you to choose from.

Engraved w/ Zombie Killer

Mil-Spec Ejection Port Door
Mil-Spec Heavy Phosphate Coating
Weight: .50oz

List Price: $9.95
Our Price: $9.50
Savings: $0.45
77 in stock!
SED7010 Spike's Ejection Port Cover Spider

We offer our standard ejection port door or if you want to customize your rifle we have a selection of custom engravings for you to choose from.

Engraved w/ Spider and Flag

Mil-Spec Ejection Port Door
Mil-Spec Heavy Phosphate Coating
Weight: .50oz

List Price: $9.95
Our Price: $9.50
Savings: $0.45
76 in stock!
SED7011 Spike's Ejection Port Cover Bio Hazard

We offer our standard ejection port door or if you want to customize your rifle we have a selection of custom engravings for you to choose from.

Engraved w/ Spider and Biohazard

Mil-Spec Ejection Port Door
Mil-Spec Heavy Phosphate Coating
Weight: .50oz

List Price: $9.95
Our Price: $9.50
Savings: $0.45
54 in stock!
SED7018 Spike's Ejection Port Cover Crusader

We offer our standard ejection port door or if you want to customize your rifle we have a selection of custom engravings for you to choose from.

Engraved w/ Crusader Shield & Deus Vult

Mil-Spec Ejection Port Door
Mil-Spec Heavy Phosphate Coating
Weight: .50oz

List Price: $9.95
Our Price: $9.50
Savings: $0.45
92 in stock!
MT-RSX1L UTG 1" Super Slim Picatinny Riser Mount 13 Slot

• A Fresh New Look Precision CNC Machined from 6061-T6 Aircraft Grade Aluminum and Finished in a Matte Black Anodize
• Distinctive Scalloped Picatinny Slots for Snag Free Accessory Mounting
• Continuous Rail Edge Design Allows the Installation of Multiple Riser Mounts Side by Side to Form One Continuous Picatinny Rail
• Utilizes Locking Torx Screws and Square-shaped Integral Recoil Stops for a Secure Zero Hold
• 5.5" in Length with a 1" Saddle Height and 3 Picatinny Slots to Accommodate a Wide Variety of Different Optics
• Significant Lightening Cuts Massively Reduce Weight Resulting in a Fully Capable, Lightweight, and Aesthetically Pleasing Picatinny Riser Mount
• Includes a T20 Torx Wrench for a Simple and Friendly Installation

MSRP $12.97
Our Price: $12.50
Online Sale Price $9.95
Savings: $3.02
1 in stock!
YHM-111-300 Yankee Hill Dust Cover Assembly 300 Blackout

YHM has long been a supplier of Caliber Marked upper receivers, but we soon asked ourselves "What if we want to change the caliber of that upper receiver?" For this reason, we now offer caliber marked dust covers for those who may end up changing the caliber of their top end/upper receiver,

SPECIFICATIONS
- Assemblies Include the following: Caliber Marked Dust Cover. Rod and Retaining Clip and Spring

List Price: $11.25
Our Price: $10.25
Savings: $1.00
(Out of Stock)
YHM-111-556 Yankee Hill Dust Cover Assembly 5.56 NATO

YHM has long been a supplier of Caliber Marked upper receivers, but we soon asked ourselves "What if we want to change the caliber of that upper receiver?" For this reason, we now offer caliber marked dust covers for those who may end up changing the caliber of their top end/upper receiver,

SPECIFICATIONS
- Assemblies Include the following: Caliber Marked Dust Cover. Rod and Retaining Clip and Spring

List Price: $11.25
Our Price: $10.25
Savings: $1.00
15 in stock!
YHM-111-9 Yankee Hill Dust Cover Assembly 9MM

YHM has long been a supplier of Caliber Marked upper receivers, but we soon asked ourselves "What if we want to change the caliber of that upper receiver?" For this reason, we now offer caliber marked dust covers for those who may end up changing the caliber of their top end/upper receiver,

SPECIFICATIONS
- Assemblies Include the following: Caliber Marked Dust Cover. Rod and Retaining Clip and Spring

List Price: $11.25
Our Price: $10.25
Savings: $1.00
(Out of Stock)
UR-08-R Luth AR Forward Assist Assembly

Luth AR Forward Assist Assembly

MSRP $11.95
Our Price: $10.50
Savings: $1.45
2203 in stock!
MT-RSX5L UTG Super Slim Picatinny Riiser Mount .5" Height 13 Slots

• UTG Super Slim Picatinny Riser Mount, 0.5" Saddle Height, 13 Slots, 5.5" in Length
• A Fresh New Look Precision CNC Machined from 6061-T6 Aircraft Grade Aluminum and Finished in a Matte Black Anodize
• Distinctive Scalloped Picatinny Slots for Snag Free Accessory Mounting
• Continuous Rail Edge Design Allows the Installation of Multiple Riser Mounts Side by Side to Form One Continuous Picatinny Rail
• Utilizes Locking Torx Screws and Square-shaped Integral Recoil Stops for a Secure Zero Hold
• 5.5" in Length with a 0.5" Saddle Height and 13 Picatinny Slots for Accommodate Many Different Optics
• Significant Lightening Cuts Massively Reduce Weight Resulting in a Fully Capable, Light Weight, and Aesthetically Pleasing Picatinny Riser Mount
• Includes T20 Torx Allen Wrench for a Simple and Friendly Installation

MSRP $14.97
Our Price: $11.25
Savings: $3.72
256 in stock!
SFT5000 Spike's Forward Assist Assembly

The Spike’s Tactical Forward Assist Assembly Kit includes the pieces you need to install a functional forward assist into your stripped upper receiver.

- Mil-Spec Forward Assist
- Forward Assist Spring
- Forward Assist Retention Pin
- Weight: .79oz

List Price: $12.00
Our Price: $11.50
Savings: $0.50
1533 in stock!
BL-04B Luth AR Pistol Gas Tube

AR Gas Tube Stainless Steel

Pistol Length gas tube OAL 6 11/16″ SKU: BL-04B

MSRP $12.49
Our Price: $12.00
Savings: $0.49
293 in stock!
MT-RSX1L UTG 1" Super Slim Picatinny Riser Mount 13 Slot

• A Fresh New Look Precision CNC Machined from 6061-T6 Aircraft Grade Aluminum and Finished in a Matte Black Anodize
• Distinctive Scalloped Picatinny Slots for Snag Free Accessory Mounting
• Continuous Rail Edge Design Allows the Installation of Multiple Riser Mounts Side by Side to Form One Continuous Picatinny Rail
• Utilizes Locking Torx Screws and Square-shaped Integral Recoil Stops for a Secure Zero Hold
• 5.5" in Length with a 1" Saddle Height and 13 Picatinny Slots to Accommodate a Wide Variety of Different Optics
• Significant Lightening Cuts Massively Reduce Weight Resulting in a Fully Capable, Lightweight, and Aesthetically Pleasing Picatinny Riser Mount
• Includes a T20 Torx Wrench for a Simple and Friendly Installation

MSRP $17.97
Our Price: $12.25
Savings: $5.72
217 in stock!
LUTHBL-09D Luth AR Delta Ring Pack

The Delta Pack
Includes:
- Barrel Snap Ring LBL-07
- .223/5.56 Weld Spring (Barrel) LBL-08
- Delta Ring LBL-09

MSRP $12.49
Our Price: $12.25
Savings: $0.24
115 in stock!
BL-04A Luth AR Carbine Gas Tube

AR Gas Tube Stainless Steel

Carbine Length gas tube OAL 9 3/4″ SKU: BL-04A

MSRP $12.99
Our Price: $12.50
Savings: $0.49
362 in stock!
BL-04C Luth AR Mid Length Gas Tube

AR Gas Tube Stainless Steel

Mid Length gas tube OAL 11 3/4″ SKU: BL-04C

MSRP $13.99
Our Price: $13.50
Savings: $0.49
461 in stock!
UR-08-T Luth AR Teardrop Forward Assist Assembly

Teardrop Forward Assist Assembly

SKU: UR-08-T

MSRP $14.75
Our Price: $13.50
Savings: $1.25
(Out of Stock)