Home Forums Hunting & Shooting AR and Tactical Rifles Talk me out of selling my Scar 17

LMAO!

If you do go for a light weight 308 build, consider using a light weight bolt carrier as part of the operating system. I was able to remove about 4 ounces from these carriers, making them approximately the same weight as a full auto AR15 carrier. That much weight reduction in the carrier makes a difference in how easy the rifle is to shoot, but has not compromised reliability in my 308 at all.

Jeez. I guess I don’t have enough posts to be worth the bandwidth. If it’s so stupid why did you click on it and feel compelled to reply. Just to be that way I guess. Nah. I don’t care. It’s all fun and games. But I really should have named it pros and cons or something.

Yes it was breastroker that had the builds I was looking at.



I was reading about the JP Low mass bolt carrier and they only recommended it for race guns and such. Mine won’t be a duty gun but I still don’t want a jammer. Did you increase the spring rate to make up for the low mass?

I’ve got an R25 that I’m in the same boat with. It’s basically impossible to hunt with because it weighs like 85 lbs

Sorry, missed your question last week.

There are some liability reasons for JP's statements, but also those apply a lot more to the aluminum carriers that wear out a lot faster than a steel carrier.

I did not change any springs or buffers to use those light weight carriers, just tuning the gas system (restricting gas more than a heavy carrier needs) is all that was required. Both of those were just as reliable afterwards, but a little easier to shoot well with less reciprocating mass. It's possible the heavy mass of an AR10 bolt carrier might be necessary in a full auto application, but for a semi-auto civilian rifle the standard 308 carriers are a lot heavier than they need to be. You can safely take these carriers down to 10-11 oz and still expect full reliability as long as the gas system is tuned to match.

Keep in mind that most 308 ARs are seriously overgassed with some loads, and an adjustable gas block or some other gas tuning method is a must, whether you use a light carrier or not.