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Questions & Answers
I own the diamond Head transporter 7.5” 5.56 , will this fit if I want to change caliber? Do I need to also change the bolt?

If u already have this barrel assembly in 5.56mm & attached to an upper with ano M16/AR15 BCG, all u need to do is get another one of the barrels assemblies chambered in .300blackout, swap em out & ur ready to go. U don't even need to buy any new mags. .300blackout was designed to fit 5.56/M16/AR15 mags & used with AR15/M16 BCG's. For any AR to be able to fire .300AAC, all that's required is for a barrel chambered for .300 to be installed. That's what makes this system from DiamondHead so cool IMO. & with the possibility of extremely ridiculous gun restrictions coming in the near future, a system like this would be great to have. Not just for the ability to swap calibers so quickly, but also being able to quickly remove the barrel essentially making the rifle a non functioning firearm. Or if u live in a state where u can't have an AR pistol, u can swap from a pistol to 16" rifle very quickly. Lots of advantages to to having this system.

by ARmed in NY, Verified Owner, January 7, 2021

Product Discontinued by Manufacturer

Diamondhead Transporter - Upper Receiver has been discontinued by Diamondhead and is no longer available. Our product experts have helped us select these available replacements below.You can also explore other items in the Gun Parts, AR 15 Parts, Rifle Parts, AR15 Upper Receivers yourself to try and find the perfect replacement for you!

Product Info for Diamondhead Transporter - Upper Receiver

This Diamondhead Transporter - Upper Receiver is a swift, versatile, and sturdy upper receiver built for speed, accuracy, and reliability. To build these AR15 Upper Receivers by Diamondhead, a T-Series 4 free floating handguard and a 7.5" chrome lined barrel are a must, but you get all of those other great features as a package with the Transporter such as the black nitride coated barrel and T Series 4 handguard. The upper receiver on the Diamondhead Transporter - 7.5" Upper Receiver is made from 7075 aluminum and is Mil-Spec rated. However, it does have a Mil-Spec receiver head that is hand forged and is Type III hard coat anodized which requires special tools to build them. Nevertheless, there's not much else to it - just 4 simple steps to transform it into a functioning weapon. For a swift way to build a powerful rifle, pick up this Diamondhead Transporter - AR Upper Receiver.image

Features of Diamondhead Transporter - Upper Receiver

  • Handguard:NEWVRS T Series 4 Free Floating
  • Barrel:7.5in Black nitride
  • Muzzle Device:Diamondhead T-Flash
  • Bolt Carrier: Black nitride finished
  • Upper Receiver: Forged and Mil-Spec out of 7075 T6 aluminum. Type III Hard Coat Anodized

Package Contents:

  • Diamondhead Transporter - Upper Receiver
  • NO SIGHTS

Ammunition

160 / 60
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Magazine and Accessories

121 / 21
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Firearm Case

140 / 40
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Gun Triggers

115 / 15
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Gunsmithing Tools & Accessories

114 / 14
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Ammo Boxes

115 / 15
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Gun Parts and Accessories

130 / 30
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Gun Barrels

113 / 13
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Gun Sights

119 / 19
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Gun Stocks

117 / 17
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Mounts, Rings and Accessories

117 / 17
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Related Products to Diamondhead Transporter - Upper Receiver

Diamondhead Transporter - Upper Receiver Unavailable & Discontinued Models

List of Unorderable Models

Diamondhead Transporter - Upper Receiver, 7.5in, .300, VRS T Series, T-Flash, BLACK, 7.5, 5945 , MPN: 5945 , UPC: 859901005634 , Code: 2DH-UFH-TRAUPRE-5945
Diamondhead Transporter - Upper Receiver, 11.5in, 5.56, VRS T Series, T-Flash, BLACK, 11.5, 5912 , MPN: 5912 , UPC: 859901005696 , Code: 2DH-UFH-TRAUPRE-5912
Diamondhead Transporter - Upper Receiver, 16in, .300, VRS T Series, T-Flash, BLACK, 16, 5948 , MPN: 5948 , UPC: 859901005788 , Code: 2DH-UFH-TRAUPRE-5948
Diamondhead Transporter - Upper Receiver, 11.5in, .300, VRS T Series, T-Flash, BLACK, 11.5, 5946 , MPN: 5946 , UPC: 857880003009 , Code: 2DH-UFH-TRAUPRE-5946
Diamondhead Transporter - Upper Receiver, 16in, 5.56, VRS T Series, T-Flash, BLACK, 16, 5914 , MPN: 5914 , UPC: 859901005719 , Code: 2DH-UFH-TRAUPRE-5914
Diamondhead Transporter - Upper Receiver, 7.5in, 5.56, VRS T Series, T-Flash, BLACK, 7.5, 5911 , MPN: 5911 , UPC: 859901005627 , Code: 2DH-UFH-TRAUPRE-5911
Diamondhead Transporter - Upper Receiver, 7.5in, 9mm, VRS T Series, T-Flash, BLACK, 7.5, 5941 , MPN: 5941 , UPC: 859901005764 , Code: 2DH-UFH-TRAUPRE-5941
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