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APA Gen 4 Little Bastard 6.5mm Muzzle Brake, Nitride 5/8×24

UPC: 810131791391

$192.99

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Description

American Precision Arms built a name for itself in the long-range and precision rifle world, and the Gen 4 Little Bastard is where that reputation gets backed up. This version is chambered for 6.5mm cartridges with a bullet diameter of .264 inch or smaller, so it's right at home on a 6.5 Creedmoor, 6.5 PRC, or 260 Remington. It's cut with a 5/8×24 thread pattern, runs 2.70 inches long, and fits barrels between .750 and 1.00 inch in diameter, covering most bull and heavy sporter contours you'll run into.

Self-Timing Setup on the Little Bastard Gen 4

One of the biggest selling points here is how it goes on. The self-timing design threads on and indexes itself without shims, peel washers, or a trip to the gunsmith. That means you can hand-tighten it, get it perfectly level, and be back on the range in about the time it takes to grab a wrench. It also makes swapping the brake off for cleaning or to run a suppressor a lot less of a hassle.

Tunable Ports Behind the Little Bastard Name

APA spent a good amount of development time on the top port geometry for this generation, and it shows. The calibrated top ports can be adjusted to counter your rifle's particular recoil impulse, whether that's muzzle rise, lateral movement, or a bit of both. The internal Bastard port and manifold were also reworked to soften the concussion and lower the pitch of the report without giving up any of the recoil reduction the brake is known for, so it stays comfortable to shoot without feeling like it's holding back.

Nitride Finish and Build on This 6.5mm Brake

The nitride coating hardens the surface and adds a layer of corrosion resistance on top of the base steel, giving it a durable matte black look that matches up well with most modern rifle builds. Every brake has the caliber and a level line machined right into the face, so you can double check your index at a glance. Each one is machined at APA's facility in Jefferson, Georgia, keeping tolerances tight from batch to batch.

Key Specifications

  • Model: Gen 4 Little Bastard
  • Manufacturer: American Precision Arms
  • Manufacturer Part Number: G4L5865N
  • UPC: 810131791391
  • Caliber Rating: 6.5mm (.264" diameter and smaller, including 6.5 Creedmoor, 6.5 PRC, 260 Remington)
  • Thread Pattern: 5/8"x24
  • Overall Length: 2.70"
  • Diameter: 1"
  • Finish: Black Nitride
  • Barrel Compatibility: .750" to 1.00" diameter
  • Installation Type: Self-timing, tool-free, no shims or crush washers required
  • Port Design: Tunable U.R.P. top ports with reworked internal manifold
  • Magnum Rated: Yes, handles magnum cartridges
  • Manufacturing Location: Jefferson, Georgia, USA

What’s Included

  • American Precision Arms Gen 4 Little Bastard 6.5mm muzzle brake, nitride finish

Frequently Asked Questions

What does self-timing mean on the Gen 4 Little Bastard?

It means the brake is designed to index and align correctly as you tighten it, without needing crush washers, peel washers, or a gunsmith to time it. You can hand thread it on, snug it up, and it lines up level on its own. This also makes it quick to remove if you want to run a suppressor or clean the bore.

Will the 6.5mm version work on my cartridge?

The 6.5mm Little Bastard is bored for any cartridge with a bullet diameter of .264 inch or smaller, which covers 6.5 Creedmoor, 6.5 PRC, and 260 Remington. If you're shooting a smaller bullet diameter like 6mm Creedmoor, you'd want the 6mm variant instead for a proper gas seal.

What barrel diameter does this brake need?

The Gen 4 Little Bastard is built to fit barrels with a muzzle diameter between .750 and 1.00 inch, which covers most bull barrels and heavier sporter contours. If your barrel is thinner or thicker than that range, APA makes other sizes in the Bastard lineup that will fit better.

Can I still tune the top ports after it's installed?

Yes, the U.R.P. tunable top ports on this brake are meant to be adjusted after you get it on the rifle so you can dial in the recoil impulse for your specific setup. It just takes some range time and small adjustments to see how each change affects muzzle movement.

Additional information

UPC

810131791391

Manufacturer

Manufacturer Part Number

G4L5865N

Model

Thread Pattern

5/8"x24

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