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ODIN Works LOW Mass 223 Nitride Bolt Carrier Group (BCG) for AR15/M4
$179.00 $152.05 Save 15%
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Most Helpful Positive Review So Far, So Good
Been running this BCG for about 6 weeks now... no issues and great performance. Ive only shot a few hundred rounda so maybe time will tell another story but as for now, no issues and loke the title says... so far, so good. Id recommend.
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Lo mass bcg

by Clay, Verified Owner from LA, United States Written on June 11, 2026
Helped tremendously with short stroking on 300blk . Paired with a yellow reduced power spring , I was able to cycle 300blk sub loads with a faxon 6in , even using powders usually not recommended for subs due to lower pressure
Would recommend: Yes
Was it helpful to you? Yes | No

no complaints

by Jaison, Verified Owner from WI, United States Written on April 2, 2026
It’s not wearing in any unusual way, seems uniformed. Screws are staked well. Not a lot of soot everywhere so I believe it’s gassing out where it should. I don’t have a gauge set to check bores for efficiency but I don’t see any red flags. The finish looks good. It’s definitely lighter than a regular BCG. I’m happy so far.
Would recommend: Yes
Was it helpful to you? Yes | No

well built

by Patrick219, Verified Owner from TX, United States Written on May 18, 2025
Great quality and well built. Worked perfectly and no issue with the low mass cycling rounds.
Would recommend: Yes
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Solid build, nice and lightweight

by Ken, Verified Owner from CA, United States Written on February 20, 2024
Odin makes great stuff so I try to use as much of their products as possible when building an Odin rifle. I’m going for an ultralight build and so this bcg fits in perfectly with that design guideline. Odin logo shows through the port for a nice esthetic touch and the build looks great and comes in under seven lbs all together (I skeletonized the receiver) so very happy with the bcg overall. Important to note that when coupled with the right spring (springco yellow) and Odin lightweight buffer and SLR enhanced buffer tube the build has zero recoil. Highly recommend build type with the Odin low mass nitride bolt carrier group. Check out the whole build at shotshow. (Odin skeleton). One of the nicest looking builds I’ve seen at any convention yet, this is an award winner.
Pros:
  • Low mass
Cons:
  • None
Best Used for:
  • Lightweight
Would recommend: Yes
0 of 2 found the following review helpful.
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Last updated 2025-11-12 UTC.