COLT Buffer Tubes? Are they all 4 position or do they have any 6 position tubes?

AR/M4 AR Technical Discussion
1

As the topic asks, are all of the COLT buffer tubes 4 position? I just picked up a COLT LE6920 M4A1 Carbine marked lower for my BLOCK II and the 4 position tube is OK with the LE stock but once I put my SOPMOD on, the first position has the stock a little father back than I like it due to the butt pad etc.

I want to keep it all COLT parts if possible but I’m not seeing any COLT 6 position tubes anywhere.

Option two might just be to buy an LMT tube.

2

99.9% certain they are all 4pos.

3

Would explain why I find no rifles listed with 6 position tubes.

4

I’m sure Grant, Sottyryan, and some others could chime in and confirm 100% for you.

5

4 position to the best of my knowledge.

6

4

C4

7

I know a lot of people use LMT buffers and stocks on BLOCK builds but would you ever see an actual LMT buffer on an issued rifle?

8

Specialized armament lists a 6 position: http://www.specializedarmament.com/products/Receiver_Extension_MK18_6_position-1172-291.html
Considering their unwavering dedication to Colt (they don’t sell anything but colt to my knowledge), this is likely a colt 6 position RE?

9

I found this.

http://www.impactguns.com/colt-competition-sporting-rifle-ar15-223556-16in-m4-carbine-style-6-position-adjustable-stock-30-rou.aspx

Apparently, Colt does have a 6-position buffer tube now. Whether they produce it or not remains to be seen.

10

Not really a Colt from what I can tell: “COLT COMPETITION RIFLES are licensed products of New Colt Holding Corp., and are manufactured under License by BOLD IDEAS TEXAS.”
http://www.coltcompetitionrifle.com/

11

I don’t have a definitive answer on what the deal is with the 6 position receiver extensions that Specialized Armament sells but Ken does list them with a Colt part number. I have two of them and the Anodizing on them is little lighter than the anodizing on my 4-position Colt receiver extensions; apart from that and the fact that they have six positions, they look identical to my 4-position Colt REs. My BCM receiver extension is close but that flat spot near the front is smaller than it is on my 4-position Colt and 6-position Specialized Armament REs. Top picture left to right: 4-position Colt and 6-postion from Specialized Armament. Bottom picture left to right: BCM and LMT.

12

The one SAW sells could be a Colt Canada part as the C7 and C8 use 6-pos tubes.

13

If you’re talking old school, the originals only had two positions - all the way closed and all the way open.