Posted: 4/16/2026 10:41:39 PM EDT
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Finally got around to removing the P/W on my SOCOM. Came off super easy and clean. Busted out the bottle of Rocksett and got a 51T mounted on the muzzle for the NOS AAC M4-2000 I have. Minus the PEQ-15 this is set up as my issued rifle was…so it holds a special place in my heart. Feels like an extension of my body. Bonus pics of another 6921 I have set up with an OCL OCM5 and OTB mount… Attached File Attached File Attached File Attached File Attached File |
| AU is now offering the 6921 SOCOM upper. |
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Originally Posted By JohnnyA: AU is now offering the 6921 SOCOM upper. |
Joined:
Feb 2022
Posts:
517
EE: 100% (3)
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Originally Posted By Bret: My LE6921SOCOMCK upper half arrived from Arms Unlimited. https://i.postimg.cc/Kv2Pyv2X/LE6921SOCOMCK-box-label.jpg Here it is above my LE6920SOCOM for comparison. https://i.postimg.cc/65XrN5NP/LE6920SOCOM-rifle-and-LE6921SOCOM-upper.jpg Looks nice, does the upper receiver have a cage code mark? |
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Originally Posted By Bret: Tell me where it would be and I'll look. Attached File |
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Originally Posted By Bret: No. It has the keyhole forging mark. Interestingly, I looked over a bunch of my Colts and only found that cage code on the ones with square forging marks. None of the ones with keyhole forging marks had the cage code number. Ok thanks that's why i asked i know Colt does put some out with no cage code. Most of my Colts are older C stamped but have a few keyhole/square forging marks with the cage code. Attached File |
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Originally Posted By Bret: My LE6921SOCOMCK upper half arrived from Arms Unlimited. https://i.postimg.cc/Kv2Pyv2X/LE6921SOCOMCK-box-label.jpg Here it is above my LE6920SOCOM for comparison. https://i.postimg.cc/65XrN5NP/LE6920SOCOM-rifle-and-LE6921SOCOM-upper.jpg Thinking I might pick one of these uppers up for my son. Is the FH pinned and welded? |
I can’t stand it to think my life is going so fast and I’m not really living it.

