Polytech Posted July 17, 2008 Share Posted July 17, 2008 Are the benifits of a lightened carrier enough to justify the expense, or is it money better spent on an adjustable gas block? I have an 18" barrrel with rifle gas system and a miculek comp (probably will switch to a benny cooley soon though) Thanks, Polytech Link to comment Share on other sites More sharing options...
mpeltier Posted July 17, 2008 Share Posted July 17, 2008 Someone will correct me if im wrong but the Ar gas system is just that, a system, and changing one part of the system may result in a little performance gain, but if you match the components for best efficiancy the result is much better. You already have a good efficient comp, adding a light bolt carrier and an adjustable gas block will net the most desireable result. JP's instructions for adjusting the gas system are a good thing to read. Link to comment Share on other sites More sharing options...
el pres Posted July 17, 2008 Share Posted July 17, 2008 Someone will correct me if im wrong but the Ar gas system is just that, a system, and changing one part of the system may result in a little performance gain, but if you match the components for best efficiancy the result is much better. You already have a good efficient comp, adding a light bolt carrier and an adjustable gas block will net the most desireable result. JP's instructions for adjusting the gas system are a good thing to read. Your right, you cant have one without the other. A lightened carrier without a block will just go faster and beat everything up. On the otherhand you could run an adjustable gas block to slow down the stock carrier... Link to comment Share on other sites More sharing options...
Polytech Posted July 17, 2008 Author Share Posted July 17, 2008 (edited) Thanks for the info fellas, I'm just kinda exploring my options to make my rifle (and me) faster. I kinda think I'm not good enough to justify those additional expenses yet. If it should be approached as a system I'll probably just keep plugging along with the stock stuff until I can get it in one shot, I need a nice jp trigger before the light go-fast stuff anyway Edited July 17, 2008 by Polytech Link to comment Share on other sites More sharing options...
cking Posted July 18, 2008 Share Posted July 18, 2008 Biggest problem with AR system is wear at the gas port letting more and more gas in. Real problem with full auto's they keep picking up the rate of fire and component wear goes way up. Adjustable gas blocks are useful, but adjusting the bolt weight, buffer weight, spring weight is tricky. I like to see a discussion on how to balance and adjust them. Link to comment Share on other sites More sharing options...
kurtm Posted July 18, 2008 Share Posted July 18, 2008 "Adjustable gas blocks are useful, but adjusting the bolt weight, buffer weight, spring weight is tricky. I like to see a discussion on how to balance and adjust them." So would Colt and FN The Reader's Digest version. Bolt carrier as light as practical titanium/aluminum/lightened stainless. Buffer as light as practical, yet retaining some kind of dampening, or you get bolt bounce out of battery and light hits. Spring only as strong as needed to strip the top round off a full magazine. Gas block adjusted just to the point of lock back on empty mag + a little for reliability. KurtM Link to comment Share on other sites More sharing options...
gotm4 Posted July 18, 2008 Share Posted July 18, 2008 When I switched from a Colt 1/2 circle non shrouded AR15 bolt carrier (8.63oz) to a JP LMOS (6.25oz) carrier on my 3gun rifle (RRA midlength barrel) I had to open up the gas port .005" of an inch. It wouldn't lock the bolt back when empty but had enough rearward motion to pick up the next round in the magazine. The lighter carriers run out of momentum sooner than a heavier carrier. Link to comment Share on other sites More sharing options...
benny hill Posted July 18, 2008 Share Posted July 18, 2008 I LOVE my titamium carrier from precession machine. Link to comment Share on other sites More sharing options...
GentlemanJim Posted July 18, 2008 Share Posted July 18, 2008 I LOVE my titamium carrier from precession machine. YEP ...I like them well enough...I have a dozen of them to use in Firebirds. IMHO aluminum carriers are TOO light and dont carry the kinetic energy required for dependable operation. You can play the game and move mass to the buffer...but why? The TI is about as light as you need to go..and still have good function Jim Link to comment Share on other sites More sharing options...
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