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AR15 Upper Receiver Parts for Sale at Northern Rifleman
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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
813 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
184 in stock!
Yankee Hill Barrel Shim Set 1/2" Iinside Diameter Yankee Hill Barrel Shim Set 1/2" Iinside Diameter

List Price: $7.50
Our Price: $6.50
Savings: $1.00
1414 in stock!
Yankee Hill Barrel Shim Set 5/8" Inside Diameter Yankee Hill Barrel Shim Set 5/8" Inside Diameter

List Price: $7.50
Our Price: $6.50
Savings: $1.00
703 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
(Out of 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
495 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
6 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!
Yankee Hill Dust Cover Assembly 300 Blackout Yankee Hill Dust Cover Assembly 300 Blackout

List Price: $10.50
Our Price: $9.25
Savings: $1.25
(Out of Stock)
Yankee Hill Dust Cover Assembly 5.56 NATO Yankee Hill Dust Cover Assembly 5.56 NATO

List Price: $10.50
Our Price: $9.25
Savings: $1.25
483 in stock!
Yankee Hill Dust Cover Assembly 9MM Yankee Hill Dust Cover Assembly 9MM

List Price: $10.50
Our Price: $9.25
Savings: $1.25
(Out of 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
130 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
459 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
121 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
68 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
40 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
53 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!
UR-08-R Luth AR Forward Assist Assembly

Luth AR Forward Assist Assembly

MSRP $11.95
Our Price: $10.50
Savings: $1.45
(Out of 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
368 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
(Out of 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
122 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
350 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
(Out of 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
116 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
(Out of 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)
BL-04 Luth AR Standard Gas Tube

AR Gas Tube Stainless Steel

Rifle Length gas tube OAL 15 3/16″ SKU: BL-04

MSRP $15.99
Our Price: $15.25
Savings: $0.74
(Out of Stock)
URPK-A3 Luth AR Upper Receiver Parts Kit

A3 Upper Receiver Parts Kit

Contains:
Ejection Port Cover
Ejection Port Rod
Ejection Port C-Clip
Ejection Port Spring
Forward Assist Button
Forward Assist Spring
Forward Assist Pin

MSRP $16.95
Our Price: $16.50
Savings: $0.45
(Out of Stock)
SDR100A Spike's Delta Ring Assembly with Nut

The Spike’s Tactical Delta Ring assembly is fully Mil-Spec and comes ready for you to finish your new upper. The barrel nut is machined from tough chromoly steel, is properly heat treated, and of course completed with a phosphate finish. We also finished the weld spring and snap ring in a phosphate finish per Mil-Spec. The delta ring itself is made of Mil-Spec aluminum and features a black anodized finish. Inside the package you’ll find everything already installed so you can quickly mount your barrel and get that build one step closer to being finished.

Assembly Includes
- Barrel Nut
- Weld Spring
- Snap Ring
- Delta Ring

Weight: 2.5oz

List Price: $18.95
Our Price: $18.25
Savings: $0.70
513 in stock!