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450 bm upper receiver - Rock River Arms A4 .450 Bushmaster Completed Upper

by Z, Verified Owner from CO, United States Written on April 10, 2025
Review for Rock River Arms A4 .450 Bushmaster Completed Upper
Rock River Arms A4 .450 Bushmaster Completed Upper
Rock River Arms A4 .450 Bushmaster Completed Upper
As Low As $619.99 Save Up to 10%
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Z's Review of Rock River Arms A4 .450 Bushmaster Completed Upper

Great upper. Haven't fired it yet but will this weekend. I can't say enough good about Optics Planet. They shipped this fast so it would get to Colorado before our communist tax bill went through. The 2A community is absolutely amazing.
Pros:
  • It's a Rock River Arms. Quality is always over the top.
Cons:
  • None yet.
Best Used for:
  • AR-15 lower receivers.
Would Recommend: Yes
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