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Posted: 12/7/2008 5:27:54 AM EDT
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Dee de dee
I replaced my m4gery pinned telesstock with a 6 position stock. I noticed that the spring and buffer are shorter. Go with the shorter set or would both work? Thanks, -Coop |
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The length of the spring and buffer go hand in hand with the depth of the receiver extension.
Sounds like the pinned unit used a full length receiver extension in sort, and the new carbine does use the short spring and buffer. Short lesson here, The shorter spring (10.5") is made of thicker diameter wire, so it will have the same tension as the longer spring (11.75"). The shorter depth of the carbine receiver extension will require the shorter spring (since the longer spring will compress bind before the end of stroke if used) and the shorter buffer to allow the B/C to reach the correct back of stroke length. If you use the longer units, you will find that the bolt will not be able to lock back on the catch (either spring or longer buffer used), and even run into problem will feeding (bolt not making it back far enough behind the round in the mag to strip it correctly). Now on the same token, you do not use a carbine buffer, nor carbine spring with a full length receiver extension. In regards to the shorter spring, there will be too much free run of the B/C at unlock until the spring does reach it's normal tension (over function problems) and in regards to the shorter buffer, since the B/C will not be rearward limited correctly, the back of the carrier key will strike the back of the receiver, and most likely, crack the the back of the receiver. |
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Thank you.
Also, just found out that the firing pin doesn't have a spring to keep it from contacting the primer... I guess that's not an issue. This was my first take down for clean and lube... should have seen how long it took me to figure out how to get the charging handle back in with the bolt carrier. I used Militec-1 oil since that's the best quality lube I have at the time. Seems like the Militec-1 grease would be better for the rails?? -Coop |
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Thanks all for the help. I'm going to the range today (NRA in Fairfax ) to try it out. I ordered a trigger from Bill Springfield, but will not have it for a while.
I'll pick up some CLP on my way home. I learned my 1911 through trial and error, so goes the AR. Thanks all, -Coop |
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