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Fostech AR-15 Mg/Al Alloy Upper Receiver Stripped
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jeff's Review of Fostech AR-15 Mg/Al Alloy Upper Receiver Stripped

The instructions on the packaging state very clearly to use a reaction rod. If you do so, you won’t destroy your purchase.

These are very light weight (between 4.47 and 4.56oz for my 3). The finish is a nice color. Dark gray more than true black. Inside the receiver where the charging handle slides into place is a little rough. Nothing a minute with a piece of ultra fine sandpaper won’t fix. Mostly just an issue of it scraping off onto your charging handle if you don’t.

If you’re looking to build a <4lb gun, these are excellent.
Pros:
  • Ligh weight
Cons:
  • None
Best Used for:
  • light weight AR 15 builds
Would Recommend: Yes
5 of 5 found the following review helpful.
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Last updated 2025-11-12 UTC.