Top Sellers
$195.00
$195.00

DIY Parts & Components

6.5 Grendel | DIY Parts & Components
This category includes base components needed to begin building your own 6.5 Grendel upper receiver or lower receiver. All parts available from Alexander Arms® are visible here in the Online Store. Some additional parts that are required to complete assembly are not sold by Alexander Arms®.
This 11" 6.5 Grendel barrel is the perfect starting point for your very own 6.5 Grendel SBR or Pistol build! The barrel specs are: button-rifled, 416 R stainless steel 6.5 Grendel barrel. Features 1:7.5 twist rate, 9/16-24 TPI RH muzzle threading, 60-degree muzzle crown, and barrel extension installed. Gas port is positioned at carbine length. Manufactured by Alexander Arms® and sold with exactly the same specifications as the Alexander Arms® 6.5 Grendel 11-inch upper receiver assembly. Fully-inspected and fully-prepared for assembly into an AR-15 platform rifle. Barrel weight is 1.36 pounds. Gas block diameter is 0.750 inches. Specifications are not optional and custom barrels are not made. Please review the warranty disclaimer in the Additional Info section before ordering.
 
We are proud to introduce LiFe, the next generation of ferritic nitrocarburizing.  The LiFe process is not just another trademark for decade’s old technology, but an evolutionary method of ferritic nitrocarburizing and oxidizing simultaneously. (US7238244 B2 Patent)

 The LiFe process results are unparalleled on firearms components, enhancements include:

    Increased hardness and wear resistance
    Increased corrosion resistance
    Lower coefficient of friction
    Integral complex oxide layer


The item pictured doesn't reflect the black color of our new LiFe coating process.


Please be aware that due to the popularity of this product there can be a lead time of 2-6 weeks.
$195.00
  • full star
  • full star
  • full star
  • full star
  • full star
Extremely lightweight profile, button-rifled, chrome moly 6.5 Grendel barrel. Features 1:7.5 twist rate, melonite bore and exterior finish, 9/16-24 TPI RH muzzle threading, 60-degree muzzle crown, and barrel extension installed. Manufactured by Alexander Arms® and sold with exactly the same specifications as the Alexander Arms® 6.5 Grendel Incursion rifle. Fully-inspected and fully-prepared for assembly into an AR-15 platform rifle. Barrel weight is 1.52 pounds. Gas block diameter is 0.750 inches. Specifications are not optional and custom barrels are not made. Please review the warranty disclaimer in the Additional Info section before ordering.
 
We are proud to introduce LiFe, the next generation of ferritic nitrocarburizing.  The LiFe process is not just another trademark for decade’s old technology, but an evolutionary method of ferritic nitrocarburizing and oxidizing simultaneously. (US7238244 B2 Patent)

 The LiFe process results are unparalleled on firearms components, enhancements include:

    Increased hardness and wear resistance
    Increased corrosion resistance
    Lower coefficient of friction
    Integral complex oxide layer
$195.00
Lightweight profile, button-rifled, stainless steel 6.5 Grendel barrel. Features 1:7.5 twist rate, fluting for weight reduction, 9/16-24 TPI RH muzzle threading, 60-degree muzzle crown, and barrel extension installed. Gas port is positioned at mid-length. Manufactured by Alexander Arms® and sold with exactly the same specifications as the Alexander Arms® 6.5 Grendel 16-inch Lite upper receiver assembly. Fully-inspected and fully-prepared for assembly into an AR-15 platform rifle. Barrel weight is 1.74 pounds. Gas block diameter is 0.750 inches. Specifications are not optional and custom barrels are not made. Please review the warranty disclaimer in the Additional Info section before ordering.
 
We are proud to introduce LiFe, the next generation of ferritic nitrocarburizing.  The LiFe process is not just another trademark for decade’s old technology, but an evolutionary method of ferritic nitrocarburizing and oxidizing simultaneously. (US7238244 B2 Patent)

 The LiFe process results are unparalleled on firearms components, enhancements include:

    Increased hardness and wear resistance
    Increased corrosion resistance
    Lower coefficient of friction
    Integral complex oxide layer

The item pictured doesn't reflect the black color of our new LiFe coating process.

Please be aware that due to the popularity of this product there can be a lead time of 2-6 weeks.
$195.00
  • full star
  • full star
  • full star
  • full star
  • full star
Lightweight profile, button-rifled, stainless steel 6.5 Grendel barrel. Features 1:7.5 twist rate, glass bead blasted, fluting for weight reduction, 9/16-24 TPI RH muzzle threading, 60-degree muzzle crown, and barrel extension installed. Gas port is positioned at mid-length. Manufactured by Alexander Arms® and sold with exactly the same specifications as the Alexander Arms® 6.5 Grendel 18-inch Lite upper receiver assembly. Fully-inspected and fully-prepared for assembly into an AR-15 platform rifle. Barrel weight is 1.85 pounds. Gas block diameter is 0.750 inches. Specifications are not optional and custom barrels are not made. Please review the warranty disclaimer in the Additional Info section before ordering. Production lead times may apply.
 
We are proud to introduce LiFe, the next generation of ferritic nitrocarburizing.  The LiFe process is not just another trademark for decade’s old technology, but an evolutionary method of ferritic nitrocarburizing and oxidizing simultaneously. (US7238244 B2 Patent)

 The LiFe process results are unparalleled on firearms components, enhancements include:

    Increased hardness and wear resistance
    Increased corrosion resistance
    Lower coefficient of friction
    Integral complex oxide layer

Please be aware that due to the popularity of this product there can be a lead time of 2-6 weeks.

***Please note that the image shown is a 16" Lite Barrel! An updated photo will be uploaded shortly!***
$195.00
  • full star
  • full star
  • full star
  • full star
  • full star
Introducing the Alexander Arms 6.5 Grendel Upper Kit! This kit has everything you need to get started on your very own 6.5 upper build! The kit includes:
  • -Mil-Spec flat top upper receiver (port door and forward assist installed)
  • -Our very own high quality 16" chrome moly, extreme lightweight barrel with a 1:7.5 twist and a melonite finish, threaded 9/16-24 TPI RH
  • -Complete bolt carrier and 6.5 Grendel Bolt
  • -Your choice of either a Low Profile or Picatinny Railed Gas Block
  • -Mid-length Gas tube
  • -Mil-Spec charging handle
The kit does not include a barrel nut or handguard.
 
We are proud to introduce LiFe, the next generation of ferritic nitrocarburizing.  The LiFe process is not just another trademark for decade’s old technology, but an evolutionary method of ferritic nitrocarburizing and oxidizing simultaneously. (US7238244 B2 Patent)

 The LiFe process results are unparalleled on firearms components, enhancements include:

    Increased hardness and wear resistance
    Increased corrosion resistance
    Lower coefficient of friction
    Integral complex oxide layer
$600.00
Introducing the Alexander Arms 6.5 Grendel SBR/Pistol Upper Kit! This kit has everything you need to get started on your very own 6.5 upper build! The kit includes:
  • -Mil-Spec flat top upper receiver (port door and forward assist installed)
  • -Our very own high quality 11" 416R SS barrel with a 1:7.5 twist and a bead blasted stainless finish, threaded 9/16-24 TPI RH
  • -Complete bolt carrier and 6.5 Grendel Bolt
  • -Your choice of either a Low Profile or Picatinny Railed Gas Block
  • -Carbine length Gas tube
  • -Mil-Spec charging handle
The kit does not include a barrel nut or handguard.
 
We are proud to introduce LiFe, the next generation of ferritic nitrocarburizing.  The LiFe process is not just another trademark for decade’s old technology, but an evolutionary method of ferritic nitrocarburizing and oxidizing simultaneously. (US7238244 B2 Patent)

 The LiFe process results are unparalleled on firearms components, enhancements include:

    Increased hardness and wear resistance
    Increased corrosion resistance
    Lower coefficient of friction
    Integral complex oxide layer

The item pictured doesn't reflect the black color of our new LiFe coating process.
$600.00
Introducing the Alexander Arms 6.5 Grendel Upper Kit! This kit has everything you need to get started on your very own 6.5 upper build! The kit includes:
  • -Mil-Spec flat top upper receiver (port door and forward assist installed)
  • -Our very own high quality 16" 416R stainless steel, fluted barrel with a 1:7.5 twist, threaded 9/16-24 RH
  • -Complete bolt carrier and 6.5 Grendel Bolt
  • -Your choice of either a Low Profile or Picatinny Railed Gas Block
  • -Mid-length Gas tube
  • -Mil-Spec charging handle
The kit does not include a barrel nut or handguard.
 
We are proud to introduce LiFe, the next generation of ferritic nitrocarburizing.  The LiFe process is not just another trademark for decade’s old technology, but an evolutionary method of ferritic nitrocarburizing and oxidizing simultaneously. (US7238244 B2 Patent)

 The LiFe process results are unparalleled on firearms components, enhancements include:

    Increased hardness and wear resistance
    Increased corrosion resistance
    Lower coefficient of friction
    Integral complex oxide layer
$630.00
Introducing the Alexander Arms 6.5 Grendel Upper Kit! This kit has everything you need to get started on your very own 6.5 upper build! The kit includes:
  • -Mil-Spec flat top upper receiver (port door and forward assist installed)
  • -Our very own high quality 18" 416R stainless steel, fluted barrel with a 1:7.5 twist, threaded 9/16-24 RH
  • -Complete bolt carrier and 6.5 Grendel Bolt
  • -Your choice of either a Low Profile or Picatinny Railed Gas Block
  • -Mid-length Gas tube
  • -Mil-Spec charging handle
The kit does not include a barrel nut or handguard.
 
We are proud to introduce LiFe, the next generation of ferritic nitrocarburizing.  The LiFe process is not just another trademark for decade’s old technology, but an evolutionary method of ferritic nitrocarburizing and oxidizing simultaneously. (US7238244 B2 Patent)

 The LiFe process results are unparalleled on firearms components, enhancements include:

    Increased hardness and wear resistance
    Increased corrosion resistance
    Lower coefficient of friction
    Integral complex oxide layer
$630.00
Alexander Arms® 6.5 Grendel caliber-designated stripped upper receiver, the same that is used in our high-quality factory-assembled products. Made from tough 7075 aluminum alloy to military AR-15 specifications. Includes the engraving "ALEX-A 6.5 GREN" on the receiver. Product weight is 0.44 pounds. No other parts are included or supplied with this product.
$99.00
Alexander Arms® 6.5 Grendel caliber-designated stripped lower receiver, the same that is used in our high-quality factory-assembled products. Made from tough 7075 aluminum alloy to military AR-15 specifications. Features a small trigger pin with (0.154") dimensions. Includes the Alexander Arms® 6.5 Grendel serial number along with the Alexander Arms® company logo, company name, and company location engraved on the receiver. Product weight is 0.52 pounds. No other parts are included or supplied with this product.
$110.00
Alexander Arms® high-quality gas block manufactured to our specifications. Features a durable manganese phosphate coating and set screw attachment. Weight of gas block is 0.13 pounds. Mates perfectly with the Lite series barrels and gas tubes currently being sold by Alexander Arms®. Two set screws are required and included.
$93.50
Alexander Arms® high-quality gas block manufactured to our specifications. Features a durable manganese phosphate coating and set screw attachment. Weight of gas block is 0.23 pounds. Mates perfectly with the Lite series barrels and gas tubes currently being sold by Alexander Arms®. Two set screws are required and included.
$93.50