WD40Dawson Posted January 13, 2015 Report Share Posted January 13, 2015 Hello everyone this is my first post! I feel like this may be a stupid question but I am just so frustrated with recent events regarding my weapon. I have a Windham Weaponry SRC-308 (best rifle I've shot in the .308 caliber) and I love it. I have added numerous upgrades but I am having issues with what seems to be fairly simple. I have a stock bolt carrier group, stock bolt catch/release, and stock mag release. I run a Magpul Pmag and have never had an issue with the bolt staying back clean/dirty/or after heavy use. Last night I had an order come in including a spikes tactical heavy buffer and a BCM (Bravo Company USA) Mod 3 Large handle charging handle come in. I simply replaced the charging handle and the buffer and everything looks and feels perfect. HOWEVER, When i pull the charging handle back with the magazine in the bolt will stay back, as soon as I release the magazine to put another one in, the bolt is released and pushed forward. I know i ordered the correct buffer and charging handle, but what did i do wrong. I thought about it all morning and cant think of what could be wrong. I am going to replace the original charging handle to see if that is the issue, but until i figure it out i thought maybe you guys may know! Thanks for any advice or help! Dawson Quote Link to comment Share on other sites More sharing options...
98Z5V Posted January 13, 2015 Report Share Posted January 13, 2015 Which Spike's buffer did you buy? They make 5.56 carbine buffers - which would work in an Armalite AR-10 Carbine (using a 7 5/8" internal depth carbine receiver extension). I'm not aware of Spike's making any DPMS-based .308 AR buffers. The appropriate weight buffer for a .308 AR carbine is H3-weighted, also. If the Spike's is the T2, it's not heavy enough for standard .308 AR Carbine operations. Quote Link to comment Share on other sites More sharing options...
edgecrusher Posted January 13, 2015 Report Share Posted January 13, 2015 Wrong buffer man, try Heavybuffers.com. You'll get the right one and will be happy as a clam. Fyi- only Armalite makes AR10's Quote Link to comment Share on other sites More sharing options...
survivalshop Posted January 14, 2015 Report Share Posted January 14, 2015 Do you have a 308 specific Bolt Catch ? The Magazine's follower is what pushes up the Bolt Catch to stop or hold the bolt . If you remove the Magazine , it may not hold the BCG if an AR 15 Catch was used. Need 308 Buffer & spring , as has been said . The difference . Quote Link to comment Share on other sites More sharing options...
392heminut Posted January 14, 2015 Report Share Posted January 14, 2015 I don't think the bolt catch is his problem, it was working fine before he changed the buffer and charging handle. My money is on the buffer being an AR-15 buffer and the bolt catch is now catching on the front edge of the bolt carrier instead of the front of the bolt. Quote Link to comment Share on other sites More sharing options...
survivalshop Posted January 14, 2015 Report Share Posted January 14, 2015 (edited) I don't think the bolt catch is his problem, it was working fine before he changed the buffer and charging handle. My money is on the buffer being an AR-15 buffer and the bolt catch is now catching on the front edge of the bolt carrier instead of the front of the bolt. You could be right , that is the wrong Buffer , but when I see std Bolt catch , makes me wonder . It doesn't say if he built this rifle or was a factory built . Even if Factory built , you never know . The AR 15 Bolt Catch in a 308 format will also drop the BCG in the same manner as he is describing , even with the correct Buffer & spring . <dontknow> Edited January 14, 2015 by survivalshop Quote Link to comment Share on other sites More sharing options...
WD40Dawson Posted January 14, 2015 Author Report Share Posted January 14, 2015 This is a factory built lower, with the fatory bolt catch. I went home last night and tried different combinations of original charging handle and original buffer, and found that the buffer was the issue. I am surprised that it was the issue. I called spikes to see if the buffer would work and the rep on the line said yes, they personally use the Spikes T2 in their Ar15 and Ar10. So now that all is said and done i replaced the factory buffer and i am using the BCM charging handle. Thanks for the fast replies! :banana: Quote Link to comment Share on other sites More sharing options...
98Z5V Posted January 14, 2015 Report Share Posted January 14, 2015 The T2 will work on an Armalite AR-10 Carbine. Because Armalite uses a different carbine receiver extension. The T2 will not work in a DMPS-based .308 AR Carbine configuration, because the receiver extension is a standard AR-15 part (7" internal depth). ^^^ That's what happened. AR-10s and DPMS LR 308 platforms are different in a few ways, and that's one of them. Quote Link to comment Share on other sites More sharing options...
survivalshop Posted January 14, 2015 Report Share Posted January 14, 2015 (edited) This may help you in the future , from Heavy Buffers web sight . Edited January 14, 2015 by survivalshop Quote Link to comment Share on other sites More sharing options...
WD40Dawson Posted January 14, 2015 Author Report Share Posted January 14, 2015 That makes sense! The Spikes heavy buffer i bought was about an inch and a half longer than the buffer that came out of my Ar10. Quote Link to comment Share on other sites More sharing options...
edgecrusher Posted January 14, 2015 Report Share Posted January 14, 2015 Fyi- only Armalite makes AR10's The reason I put this up here, a second time, is because of parts comparability. Your rifle is not an ar10, and if you continue to refer to it that way people will misdiagnose your issues. This very important, as you are starting to see. Quote Link to comment Share on other sites More sharing options...
FaRKle! Posted January 15, 2015 Report Share Posted January 15, 2015 HOWEVER, When i pull the charging handle back with the magazine in the bolt will stay back, as soon as I release the magazine to put another one in, the bolt is released and pushed forward. If you look carefully, the carrier was probably getting caught on the bolt catch instead of the bolt itself. This is also what can happen when you have a short stroke after firing the last round in a mag. Quote Link to comment Share on other sites More sharing options...
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