Jump to content

4 Lb AR-15


Ted S.

Recommended Posts

Ignorance talking here, but thinning that barrel won't cause it to wear faster or deform due to heat and pressure?


It would require a lot of rounds before the barrel becomes heated to s point it becomes plasticized and ruptures. The gas tube generally fails before the barrel.

Btw, the OD of this barrel is the same as a typical AK47. So if an AK can make it several hundred rounds on full auto I do not believe semi auto firing will cause the plasticization needed for the barrel to fail.

As far as wear this barrel will not wear any faster than a thicker barrel.

The 300 Blackout does not have pressures that are higher than 7.62x39, generally the 300 Blackout has lower pressures.
  • Like 1
Link to comment
  • 5 weeks later...
great stuff! i worked w gordon getting my 3 gun rifle together which was at 5 lbs on the first lap
we used a upoer free of the fa and dust cover in addition to a clark handguard to save weight. in addition to a btm adjustable gas block the gun worked like a champ. 4 lbs will be cool to see for sure, gordons buffers work great, so much better than the jp or taccom we experimented with.
its amazing at what adds weight and what can save weight at the end of the day, cant wait to see the end result!!!


Sent from my iPhone using Tapatalk, its either this or smoke signals!
  • Like 1
Link to comment
  • 4 weeks later...

UPDATE: Should be wrapping this build up shortly. Just waiting to get the barrel back from cerakoting and the bolt carrier should be arriving this week. I do have to see if I can find a cotter pin for the bolt locally and will have to "borrow" a rear sight from one of the rifles at the house to test it out(I have a TROY rear sight that's being borrowed right now, but I'm going to probably "borrow" it back to test and tune this bad boy {if everything falls into place}).

 

Still haven't decided if I do want to SBR or cerakote the whole thing as of this moment.

Link to comment

How in the heck can you make a reliable, sturdy, durable, reasonably accurate AR that weighs less than 5lbs with a nitrided barrel and bolt for less than.....?  Yeah, it has to be nitrided.

 

Actually, the barrel just got cerakoted today. Special thanks to Amendment 2 Custom Coatings.

 

 

12084000_533425156813524_1589411585_n.jp

Link to comment

4.5 lbs is still pretty amazing tho.

 

I agree. I did end up comprimising on a few parts, but all in all I'm glad that it hit around the mark. I just need to test it out at the range and then I'll post some pics on the Show and Tell section.

Link to comment

I know this is not totally kosher, and I swear i am not your wife going incognito, but how much $$ are you into so far on this project? (ish)?  (Not wanting a full breakdown, just curious.)

 

You probably don't want to know. It hurts to think about it. But I built this AR with parts I wanted, so that makes up a lot of the cost. If I had to guesstimate, the lower was $400+ (has custom buffer though) and the upper is somewhere around $1000+/-. I'd also like to get a light to put on it, so that will add some cost.

 

Won't know if it's worth it till I shoot it though.

Link to comment

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

TRADING POST NOTICE

Before engaging in any transaction of goods or services on TGO, all parties involved must know and follow the local, state and Federal laws regarding those transactions.

TGO makes no claims, guarantees or assurances regarding any such transactions.

THE FINE PRINT

Tennessee Gun Owners (TNGunOwners.com) is the premier Community and Discussion Forum for gun owners, firearm enthusiasts, sportsmen and Second Amendment proponents in the state of Tennessee and surrounding region.

TNGunOwners.com (TGO) is a presentation of Enthusiast Productions. The TGO state flag logo and the TGO tri-hole "icon" logo are trademarks of Tennessee Gun Owners. The TGO logos and all content presented on this site may not be reproduced in any form without express written permission. The opinions expressed on TGO are those of their authors and do not necessarily reflect those of the site's owners or staff.

TNGunOwners.com (TGO) is not a lobbying organization and has no affiliation with any lobbying organizations.  Beware of scammers using the Tennessee Gun Owners name, purporting to be Pro-2A lobbying organizations!

×
×
  • Create New...

Important Information

By using this site, you agree to the following.
Terms of Use | Privacy Policy | Guidelines
 
We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.