.243 Win. 20″ Heavy Barrel – Rifle Length

4.33 out of 5 based on 3 customer ratings
(3 customer reviews)


  • CALIBER: .243 Win.
  • TWIST RATE: 1:8
  • MATERIAL: 4150 Chrome Moly Vanadium
  • FINISH: Nitride
  • GAS SYS: Rifle
  • MUZZLE THREAD: 5/8-24
  • ADDITIONAL SPECS/NOTES: Not compatible with any other Caliber

15 in stock

SKU: AM-04-20-243 Categories: , Tags: , ,


The 20″ .243 Win. Heavy barrel is the perfect barrel to start your hunting build and add to your AM-10 collection. This barrel is made fromĀ 4150 Chrome Moly Vanadium Steel with a Nitride Finish. Featuring a rifleĀ length gas system with a .750″ gas port and a 1:8 twist, this barrel provides top accuracy and precision for your .243 build and will allow you to bring home dinner, or just have fun at the range!

Additional information

Weight 2 lbs
Dimensions 21 x 1 x 1 in

3 reviews for .243 Win. 20″ Heavy Barrel – Rifle Length

  1. 3 out of 5

    Can I use this on an early generation (1998ish) Armalite AR10 upper receivers?

  2. 5 out of 5

    Why anyone would use the ratings area to ask a question is beyond me. Pick up the phone or send an email, for Pete’s sake. I agree with Arthur about Anderson and e-commerce.

  3. 5 out of 5

    20 inch 243 Winchester Anderson barrel; excellent. Finish was good, head space was perfect, accuracy is as good as any barrel I have, most of which I paid stupid money to own. First 5 shots, 4 in the same hole and one just touching. Zeroed, went to 250 yard steel, 20 straight, all in the center of 6 inch plate. This was all with some Fed 70 grain I just happen to have laying around. I’m impressed with this barrel. I was just trying to use a stripped lower that had no real use. Now I’m thinking, work up a 107 TMK load, and see what it will really do for me.

    PS You must have the Armalite rifle length gas tube. I got mine from Fulton Armory. You need an adjustable gas block. I recommend SLR or Superlative. Buff the chamber and feed ramps. Clean the barrel frequently during break in period, there are many routines, make up your own.

Add a review

Your email address will not be published. Required fields are marked *