optimator Posted August 31, 2016 Share Posted August 31, 2016 I finished up my new rifle last night, other than the buffer. If I take the weights out and just use the empty buffer will it be too light? I'm using mid gas, AIM LW BCG with a RCA gas key. Along with a rifle length receiver extension. Thanks guys. Link to comment Share on other sites More sharing options...
busdriver02 Posted August 31, 2016 Share Posted August 31, 2016 Why not see where the key adjusts with your setup now? I have an RCA BCG & Key and couldn't adjust the gas low enough without weight in the buffer. Link to comment Share on other sites More sharing options...
biglou13 Posted August 31, 2016 Share Posted August 31, 2016 (edited) I'm running RCA adj gas with 1 ounce Tac com rifle length buffer, spring system. Runs fine. Just make sure to tune gas key. Bus... Are you saying with key fully closed the BCG was not locking back? Edited August 31, 2016 by biglou13 Link to comment Share on other sites More sharing options...
optimator Posted August 31, 2016 Author Share Posted August 31, 2016 (edited) 1 hour ago, busdriver02 said: Why not see where the key adjusts with your setup now? I have an RCA BCG & Key and couldn't adjust the gas low enough without weight in the buffer. I'll give it a try first and see how it goes. Edited August 31, 2016 by optimator Link to comment Share on other sites More sharing options...
busdriver02 Posted August 31, 2016 Share Posted August 31, 2016 I tried a gutted carbine buffer and I couldn't close down the gas enough to get it to NOT lock back. Truth told I didn't spend much time with it, just tossed the weights back in and it works well. So end result is the RCA light weight carrier and adj key, turned out a half turn I think. Link to comment Share on other sites More sharing options...
reptoid Posted August 31, 2016 Share Posted August 31, 2016 Rifle buffer with weights removed = JP LMOS rifle buffer in weight (3oz.) Same weight as a std carbine buffer . It will run fine if all else is correct Link to comment Share on other sites More sharing options...
busdriver02 Posted August 31, 2016 Share Posted August 31, 2016 There ya go. Good to know. Link to comment Share on other sites More sharing options...
biglou13 Posted August 31, 2016 Share Posted August 31, 2016 20 minutes ago, busdriver02 said: I tried a gutted carbine buffer and I couldn't close down the gas enough to get it to NOT lock back. Truth told I didn't spend much time with it, just tossed the weights back in and it works well. So end result is the RCA light weight carrier and adj key, turned out a half turn I think. I would try tuning it again.... My first time out to tune it (brand new build) ... I couldn't get consistent results. Was frustrated....on second tune session Took out screw and set screw re installed and it does what it is supposed to do. I can't explain it doesn't make sense im writing off as break in issues. Im going to retune whole system next range day. Now that rifle is a broken in a bit. Link to comment Share on other sites More sharing options...
busdriver02 Posted August 31, 2016 Share Posted August 31, 2016 Seeing as how it's a half turn out and works now, what else could I expect? It ran with the gutted buffer, it's just softer with the weights in there. Link to comment Share on other sites More sharing options...
reptoid Posted August 31, 2016 Share Posted August 31, 2016 (edited) 9 hours ago, busdriver02 said: I tried a gutted carbine buffer and I couldn't close down the gas enough to get it to NOT lock back. Truth told I didn't spend much time with it, just tossed the weights back in and it works well. So end result is the RCA light weight carrier and adj key, turned out a half turn I think. The improvement of a lighter buffer will be most notable when you get the gas adjusted properly. If it's over gassed the heavier buffer will feel softer because it slows the bolt down. Edited September 1, 2016 by reptoid Link to comment Share on other sites More sharing options...
busdriver02 Posted August 31, 2016 Share Posted August 31, 2016 I must be screwed up in the head. The set screw impedes the gas flow through they key. So screwing all the way in gives the most restriction and least gas, correct? Link to comment Share on other sites More sharing options...
reptoid Posted September 1, 2016 Share Posted September 1, 2016 6 hours ago, busdriver02 said: I must be screwed up in the head. The set screw impedes the gas flow through they key. So screwing all the way in gives the most restriction and least gas, correct? You are not be screwed up. I was screwed up. You are correct. I edited my post accordingly Link to comment Share on other sites More sharing options...
busdriver02 Posted September 1, 2016 Share Posted September 1, 2016 Word. I'll probably give another whirl just to satisfy my curiousity now. Link to comment Share on other sites More sharing options...
optimator Posted September 1, 2016 Author Share Posted September 1, 2016 Thanks for the replies guys. I'm pretty excited about this build and was hoping to have it just right from the get go. I'll try it with & without the weights and see how it goes. Link to comment Share on other sites More sharing options...
jon49erfan Posted September 1, 2016 Share Posted September 1, 2016 22 hours ago, reptoid said: Rifle buffer with weights removed = JP LMOS rifle buffer in weight (3oz.) Same weight as a std carbine buffer . It will run fine if all else is correct I just weighted both. Mine are JP 3.0oz Gutted rifle 1.6oz Link to comment Share on other sites More sharing options...
optimator Posted September 1, 2016 Author Share Posted September 1, 2016 (edited) 4 minutes ago, jon49erfan said: I just weighted both. Mine are JP 3.0oz Gutted rifle 1.6oz I thought I had read on here that a gutted buffer was quite a bit lighter than the JP. Which one runs better? Edited September 1, 2016 by optimator Link to comment Share on other sites More sharing options...
jon49erfan Posted September 1, 2016 Share Posted September 1, 2016 never ran them side by side. Link to comment Share on other sites More sharing options...
biglou13 Posted September 2, 2016 Share Posted September 2, 2016 I can't speak for either but i have even lighter taccom. And so far runs like A dream. i'd like to compare to other systems...... anyone in north Florida area???? Link to comment Share on other sites More sharing options...
OPENB Posted September 2, 2016 Share Posted September 2, 2016 (edited) My gutted rifle buffer with an empty .308 case in place of the lead weights weighs exactly the same as the JP lightweight buffer. I use it with a Voodoo LW BC, and an SLR adj. gas block. Edited September 2, 2016 by OPENB Link to comment Share on other sites More sharing options...
optimator Posted September 2, 2016 Author Share Posted September 2, 2016 6 minutes ago, OPENB said: My gutted rifle buffer with an empty .308 case in place of the lead weights weighs exactly the same as the JP lightweight buffer. I use it with a Voodoo LW BC, and an SLR adj. gas block. It the case just loose inside of the buffer? Link to comment Share on other sites More sharing options...
TyinTX Posted September 2, 2016 Share Posted September 2, 2016 A JP lightweight rifle buffer is 3 oz. Here's the process I went thru- Standard rifle buffer 5.1 oz Standard rifle buffer with 2 steel weights and delrin spacer 2.9 oz Gutted rifle buffer 1.7 oz Taccom rifle buffer .6 oz recprocates I believe I've ran all 5 setups with my 18" Nordic barrel, fixed gas, JP LMOS bcg, JP rifle buffer spring. Standard buffer short strokes and will not run. Between the other 4, I'm not confident that if someone put one of them in my rifle that I would be able to tell which one from shooting feel. No malfunctions from any of the 4 setups. Taccom of course would not recommend using their buffer in my setup. Link to comment Share on other sites More sharing options...
OPENB Posted September 2, 2016 Share Posted September 2, 2016 I seem to recall that it's loose in the buffer to replicate the reciprocating lead weights. Link to comment Share on other sites More sharing options...
Les Snyder Posted September 3, 2016 Share Posted September 3, 2016 FYI... if you remove two the the steel weights from a standard rifle buffer, and replace them with an equal length of 1/2" aluminum round stock, you get a 4.2oz buffer... which is close to the weight of a ST-T2 carbine buffer.. which produced the least amount of scope movement in my 16" mid non adjustable gas carbine Link to comment Share on other sites More sharing options...
optimator Posted September 3, 2016 Author Share Posted September 3, 2016 How are you guys getting the end of the buffer out? I knocked out the roll pin and tried pliers. But it was so tight that I was afraid of damaging it. Any ideas? Link to comment Share on other sites More sharing options...
TonytheTiger Posted September 3, 2016 Share Posted September 3, 2016 6 minutes ago, optimator said: How are you guys getting the end of the buffer out? I knocked out the roll pin and tried pliers. But it was so tight that I was afraid of damaging it. Any ideas? Are you sufficiently angry? Sometimes it takes cursing to get them out. Link to comment Share on other sites More sharing options...
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