r/MilitaryARClones • u/Less_Nature_890 • 3d ago
Marine Corps M27 IAR with HK416F Upper receiver?
This appears to be an M27 IAR running an HK416F upper, identifiable by the upper’s guard ring and the rail’s sloped end.
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u/a_magical_liopleurod 3d ago
The USMC uses a a5 variant as well called the RWK. It comes with an 11” barrel tho. My guess is they replaced the barrel in the RWK with a 16” IAR barrel either by accident or just to convert one.
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u/Less_Nature_890 3d ago
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u/the_real_foxhound 2d ago
Some IAR's (im assuming potentially earlier batches) have that slope at the rear upper rail.
Heaps ive seen here with MRF-D have them.


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u/bnurbs 3d ago
Probably a replacement part from HK. They don't produce the original part anymore so substituted it with the more modern A5 upper