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Strike Industries SI-AR-15/M16 Receiver Extension,7 Position Assembly
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Hal Skaggs's Review of Strike Industries SI-AR-15/M16 Receiver Extension,7 Position Assembly

I was asked to build a firefighter themed AR with red accents. I chose Spike Industries for the parts because of their solid reputation and to get a consistent color match on all the parts.

The buffer tube came with a very useful end plate and a castle nut with marks for staking. The threading on the tube is long enough to facilitate an easy installation on the rifle. The Magpul butt stock fit cleanly and is tight with crisp adjustment.

The red anodizing was a bit darker than the balance of the red SI parts. Luckily, the placement is far enough away that the color difference is not noticeable. If you are not matching, this product rates a solid 5.
Would Recommend: Yes
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Last updated 2025-11-12 UTC.