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Writer's pictureEitri’s Enhancements

Using The Bootleg Adjustable BCG for 300blk



BEHOLD, the Bootleg Adjustable BCG....


This BCG is only advertised for use with .223/5.56. But that didn't stop us from testing it with 300blk!


We could sit here and type away a ton of information or you could simply watch our video review HERE


Nonetheless maybe you aren't the video-watching type, in which case we will go ahead and give you the highlights of this BCG and its uses with 300blk.


Does it work?


Absolutely! the BCG performs exactly like any quality built BCG, we have absolutely no functional issues to report!


How do you use it for 300blk?


Simple, but yet complicated because the symbols are made for .223/5.56, so let me lay it out in a simple way to understand the uses of each position.

It is important to note that if you intend to use these settings you must first "mass tune" your 300blk platform to run your weakest subsonic ammunition with your suppressor of choice, and the BCG in position "U".


Once you have mass tuned according to what was suggested above, follow the settings below to get full use out of this BCG


  • Subsonic Suppressed - Position "U"

  • Supersonic Suppressed - Position "S"

  • Supersonic Un-Suppressed - Position "U"


You can still use any of the other settings to fine tune to your specific load, but we have not found it necessary to do so, although your results may vary.


So is it all rainbows and butterflies?


It may sound like it, but that is far from the truth. There are actually a few negatives to this BCG.

So lets list them off:


  1. It's louder when using the bleed off function

  2. It does not allow many ejection port covers to close

  3. It requires the use of a tool to adjust

  4. Requires added maintenance

  5. It could damage your upper if you dont set the "S" adjustment improperly

  6. It can cause ejection malfunctions if your dust cover is closed on your first shot


Only you can decide if these negatives outweigh the positives. If our opinion matters to you, we have moved away from this BCG as for us the positives don't outweigh the negatives.

Your opinions may vary, and this may very well be the perfect solution for you.


If you are okay with the added steps and warnings mentioned above then the purchase the Bootleg Adjustable BCG with confidence as it is an excellent choice and has been 100% reliable for us!

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