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Posted: 7/18/2026 11:36:53 PM EDT
[Last Edit: Strela][Edited]
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...that's not attached to a Colt lower? Many, many years ago I bought what was advertised as a Colt four-position buffer tube off the EE. I had planned to swap the rifle buffer tube assembly on my SP1, but I decided against it. I figured I would put it back on the EE, but I want to make sure it's really a Colt item. I looked at it and can't find any markings. How do I show it's the real-deal? |
"An age of glory passed like a lightning flash. The mandate of heaven passed from you but you didn't see. Times change and power passes. It is the pity of the world."
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| Age, to begin with. To my knowledge, until recently, Colt was the only one putting our four-position mil-spec carbine receiver extensions - a few years back, LMT sold some contract overruns and now outfits like Intl MIlCo are putting out their contract overruns for cloners. Next, Colts always have the dry-film lube on the interior bore. Then I'd look at the beveling along the aft end - Colts typically have a nice bevel and not a sharp edge. Lastly, the shape of the lip that retains the buffer retainer - Colts are pretty uniform and don't have any kind of notch. |
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Also look for the numerous and prominent exterior "defects" left over from the impact extrusion process of the initial forging. This appears to look like acne scars all over the outside of the tube when lightly oiled. Since its a real Colt tube, they didn't care about how "pretty" it might look, simply machine and anodize the part. One last thing, depending on how used the takeoff part might be, the dry-film lubricant inside the tube might be close to gone and barely visible without using a bright light. |
| Ive got one of the LMT 4 pos ones. Only thing I see is a drain hole in the notch for the longest stock position and it doesn't have the typical LMT lip for the buffer retainer pin like the usual LMT RE. Might not help much if they were both built to contract specs. |
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