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ABC RIFLE COMPANY AR-15 .300 AAC Blackout Micro Pistol Build 5in Barrel 4in M-LOK Handguard Upper Receiver Up to 12% Off w/ Free Shipping — 8 models

ABC RIFLE COMPANY AR-15 .300 AAC Blackout Micro Pistol Build 5in Barrel 4in M-LOK Handguard Upper Receiver, Sniper Grey, ARPK300-ML4-SG
ABC RIFLE COMPANY AR-15 .300 AAC Blackout Micro Pistol Build 5in Barrel 4in M-LOK Handguard Upper Receiver, Tungsten, ARPK300-ML4-TNG
ABC RIFLE COMPANY AR-15 .300 AAC Blackout Micro Pistol Build 5in Barrel 4in M-LOK Handguard Upper Receiver, Flat Dark Earth, ARPK300-ML4-FDE
ABC RIFLE COMPANY AR-15 .300 AAC Blackout Micro Pistol Build 5in Barrel 4in M-LOK Handguard Upper Receiver, White, ARPK300-ML4-STW
ABC RIFLE COMPANY AR-15 .300 AAC Blackout Micro Pistol Build 5in Barrel 4in M-LOK Handguard Upper Receiver, Red, ARPK300-ML4-RD
ABC RIFLE COMPANY AR-15 .300 AAC Blackout Micro Pistol Build 5in Barrel 4in M-LOK Handguard Upper Receiver, Black, ARPK300-ML4
ABC RIFLE COMPANY AR-15 .300 AAC Blackout Micro Pistol Build 5in Barrel 4in M-LOK Handguard Upper Receiver, Bronze, ARPK300-ML4-BB
ABC RIFLE COMPANY AR-15 .300 AAC Blackout Micro Pistol Build 5in Barrel 4in M-LOK Handguard Upper Receiver, Olive Drab Green, ARPK300-ML4-ODG
ABC RIFLE COMPANY AR-15 .300 AAC Blackout Micro Pistol Build 5in Barrel 4in M-LOK Handguard Upper Receiver, Sniper Grey, ARPK300-ML4-SG
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ABC RIFLE COMPANY AR-15 .300 AAC Blackout Micro Pistol Build 5in Barrel 4in M-LOK Handguard Upper Receiver, Sniper Grey, ARPK300-ML4-SG
ABC RIFLE COMPANY AR-15 .300 AAC Blackout Micro Pistol Build 5in Barrel 4in M-LOK Handguard Upper Receiver, Tungsten, ARPK300-ML4-TNG
2 of 8 images
ABC RIFLE COMPANY AR-15 .300 AAC Blackout Micro Pistol Build 5in Barrel 4in M-LOK Handguard Upper Receiver, Tungsten, ARPK300-ML4-TNG
ABC RIFLE COMPANY AR-15 .300 AAC Blackout Micro Pistol Build 5in Barrel 4in M-LOK Handguard Upper Receiver, Flat Dark Earth, ARPK300-ML4-FDE
3 of 8 images
ABC RIFLE COMPANY AR-15 .300 AAC Blackout Micro Pistol Build 5in Barrel 4in M-LOK Handguard Upper Receiver, Flat Dark Earth, ARPK300-ML4-FDE
ABC RIFLE COMPANY AR-15 .300 AAC Blackout Micro Pistol Build 5in Barrel 4in M-LOK Handguard Upper Receiver, White, ARPK300-ML4-STW
4 of 8 images
ABC RIFLE COMPANY AR-15 .300 AAC Blackout Micro Pistol Build 5in Barrel 4in M-LOK Handguard Upper Receiver, White, ARPK300-ML4-STW
ABC RIFLE COMPANY AR-15 .300 AAC Blackout Micro Pistol Build 5in Barrel 4in M-LOK Handguard Upper Receiver, Red, ARPK300-ML4-RD
5 of 8 images
ABC RIFLE COMPANY AR-15 .300 AAC Blackout Micro Pistol Build 5in Barrel 4in M-LOK Handguard Upper Receiver, Red, ARPK300-ML4-RD
ABC RIFLE COMPANY AR-15 .300 AAC Blackout Micro Pistol Build 5in Barrel 4in M-LOK Handguard Upper Receiver, Black, ARPK300-ML4
6 of 8 images
ABC RIFLE COMPANY AR-15 .300 AAC Blackout Micro Pistol Build 5in Barrel 4in M-LOK Handguard Upper Receiver, Black, ARPK300-ML4
ABC RIFLE COMPANY AR-15 .300 AAC Blackout Micro Pistol Build 5in Barrel 4in M-LOK Handguard Upper Receiver, Bronze, ARPK300-ML4-BB
7 of 8 images
ABC RIFLE COMPANY AR-15 .300 AAC Blackout Micro Pistol Build 5in Barrel 4in M-LOK Handguard Upper Receiver, Bronze, ARPK300-ML4-BB
ABC RIFLE COMPANY AR-15 .300 AAC Blackout Micro Pistol Build 5in Barrel 4in M-LOK Handguard Upper Receiver, Olive Drab Green, ARPK300-ML4-ODG
8 of 8 images
ABC RIFLE COMPANY AR-15 .300 AAC Blackout Micro Pistol Build 5in Barrel 4in M-LOK Handguard Upper Receiver, Olive Drab Green, ARPK300-ML4-ODG

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ABC Rifle Company AR-15 .300 AAC Blackout micro pistol 5” barrel 4” M-Lok upper receiver build kit by Wolfeblack, Verified Owner, February 16, 2026
I absolutely love this purchase! I was a little bit Leary at first but it was the only complete kit I could find with the red furniture already on it. Being on a budget; to buy an upper build kit and then a furniture kit separately wasn’t in my bank ...
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Product Info for ABC RIFLE COMPANY AR-15 .300 AAC Blackout Micro Pistol Build 5in Barrel 4in M-LOK Handguard Upper Receiver

This AR pistol build kit is centered around a 7075-T6 forged aluminum upper receiver and a compact 4in MLOK handguard by ABC Rifle Co, crafted from durable 6061-T6 aluminum. Its equipped with a 5in 4150 CMV barrel chambered in .300 AAC Blackout, featuring a fast 1:5 twist for optimal subsonic and supersonic performance. The system includes a .750 low-profile steel gas block, 5 3/16in stainless steel micro gas tube, and a 5/8x24 aluminum flash can muzzle blast diverter. A full-auto rated nitride BCG with a 9310 MPI-tested bolt ensures reliability. Includes mil-spec charging handle, ejection port cover, forward assist, and complete buffer system with A2 pistol grip. Lower receiver not included.image

Specifications for ABC RIFLE COMPANY AR-15 .300 AAC Blackout Micro Pistol Build 5in Barrel 4in M-LOK Handguard Upper Receiver:

Manufacturer: ABC RIFLE COMPANY
Caliber: .300 AAC Blackout
Barrel Length: 5 in
Barrel Twist Rate: 1-8
Firearms Threads Per Inch: 5/8x24
Muzzle Device: Muzzle Diverter Flash Can
Handguard Length: 4 in
Gun Rail: M-LOK
Gun Type: Rifle
Gun Make: AR Platform
Gun Model: AR-15
Bolt Carrier Group Included: MIL-SPEC
Charging Handle Included: MIL-SPEC

Package Contents:

  • ABC RIFLE COMPANY AR-15 .300 AAC Blackout Micro Pistol Build 5in Barrel 4in M-LOK Handguard Upper Receiver

What firearm models does the manufacturer say ABC RIFLE COMPANY AR-15 .300 AAC Blackout Micro Pistol Build 5in Barrel 4in M-LOK Handguard Upper Receiver is compatible with?

The manufacturer suggests that ABC RIFLE COMPANY AR-15 .300 AAC Blackout Micro Pistol Build 5in Barrel 4in M-LOK Handguard Upper Receiver is compatible with AR-15

ABC RIFLE COMPANY AR-15 .300 AAC Blackout Micro Pistol Build 5in Barrel 4in M-LOK Handguard Upper Receiver Orderable Models

List of Orderable Models

  • ABC RIFLE COMPANY AR-15 .300 AAC Blackout Micro Pistol Build 5in Barrel 4in M-LOK Handguard Upper Receiver, Sniper Grey, ARPK300-ML4-SG , MPN: ARPK300-ML4-SG , Code: 69B-URC-ABC04RP-ARPK300-ML4-SG
  • ABC RIFLE COMPANY AR-15 .300 AAC Blackout Micro Pistol Build 5in Barrel 4in M-LOK Handguard Upper Receiver, Tungsten, ARPK300-ML4-TNG , MPN: ARPK300-ML4-TNG , Code: 69B-URC-ABC04RP-ARPK300-ML4-TNG
  • ABC RIFLE COMPANY AR-15 .300 AAC Blackout Micro Pistol Build 5in Barrel 4in M-LOK Handguard Upper Receiver, White, ARPK300-ML4-STW , MPN: ARPK300-ML4-STW , Code: 69B-URC-ABC04RP-ARPK300-ML4-STW
  • ABC RIFLE COMPANY AR-15 .300 AAC Blackout Micro Pistol Build 5in Barrel 4in M-LOK Handguard Upper Receiver, Flat Dark Earth, ARPK300-ML4-FDE , MPN: ARPK300-ML4-FDE , Code: 69B-URC-ABC04RP-ARPK300-ML4-FDE
  • ABC RIFLE COMPANY AR-15 .300 AAC Blackout Micro Pistol Build 5in Barrel 4in M-LOK Handguard Upper Receiver, Black, ARPK300-ML4 , MPN: ARPK300-ML4 , Code: 69B-URC-ABC04RP-ARPK300-ML4
  • ABC RIFLE COMPANY AR-15 .300 AAC Blackout Micro Pistol Build 5in Barrel 4in M-LOK Handguard Upper Receiver, Olive Drab Green, ARPK300-ML4-ODG , MPN: ARPK300-ML4-ODG , Code: 69B-URC-ABC04RP-ARPK300-ML4-ODG
  • ABC RIFLE COMPANY AR-15 .300 AAC Blackout Micro Pistol Build 5in Barrel 4in M-LOK Handguard Upper Receiver, Red, ARPK300-ML4-RD , MPN: ARPK300-ML4-RD , Code: 69B-URC-ABC04RP-ARPK300-ML4-RD
  • ABC RIFLE COMPANY AR-15 .300 AAC Blackout Micro Pistol Build 5in Barrel 4in M-LOK Handguard Upper Receiver, Bronze, ARPK300-ML4-BB , MPN: ARPK300-ML4-BB , Code: 69B-URC-ABC04RP-ARPK300-ML4-BB
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