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American Precision Arms built a reputation on the original Bastard brake, and the Gen 2 Micro Bastard takes that same recoil-taming design and makes it something you can actually install yourself in the driveway. Instead of the usual crush washer or a gunsmith visit to get everything indexed straight up and down, this brake uses a separate timing nut that locks it into perfect alignment every time. Thread it on, snug the nut, and you're done.
The two-piece nut system is the whole selling point here. Competitive shooters who go through barrels fast can pull this brake off one rifle and thread it onto the next in the time it takes to grab a wrench, no re-timing, no re-fitting. That same convenience matters just as much for hunters and home builders who don't want to schedule a smith appointment just to get a brake pinned and welded straight.
APA originally designed the Micro Bastard for lighter sporter-profile barrels, but it's found a second home in the AR-10 and .308 AR-platform world for good reason. At 1.86 inches overall and a .750 inch diameter, it adds minimal bulk to the muzzle while still delivering the kind of recoil and muzzle rise reduction that heavier brakes struggle to match. It's machined from high-grade stainless steel and finished in a black nitride coating that holds up to heat cycling and resists corrosion better than a basic black oxide finish.
This version comes cut with 1/2"-28 tpi threads, matching the standard thread pitch found on most .223/5.56 barrels that have been opened up to .30 caliber, and it's rated for barrel diameters in the .575 to .750 inch range. Since brakes like this are caliber and thread specific, double check your barrel's thread pattern and bore diameter before ordering so it seats and times up correctly. Cleaning is straightforward too, a brass pick and some solvent will get into the baffle ports without needing to pull the whole thing apart.
No, that's the whole point of the Gen 2 design. Since the timing nut is a separate piece, you can thread the brake on and lock it into alignment at home with basic tools in about 30 seconds. There's no crush washer, peel washer, or professional indexing required like older brake designs.
As long as your barrel is threaded 1/2"-28 tpi and falls within the .575 to .750 inch diameter range, this brake will thread on and seat correctly. It's built specifically for 30 caliber rifles, so it's not a fit for smaller bore diameters like 5.56.
It might look small, but APA designed the Micro Bastard's port geometry to punch above its size. Many shooters who move to it from bulkier brakes actually notice better recoil and muzzle rise control despite the reduced weight.
Yes, that's one of the biggest advantages of the self-timing nut system. Competitive shooters who swap barrels frequently can remove and reinstall this brake on a different upper without needing to re-time or re-fit it each time.
| UPC | 810131790776 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | G2M1230N |
| Model | |
| Thread Pattern | 1/2"-28 tpi |
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