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The Range
Rifle & Shotgun Discussion
1st build help.
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<blockquote data-quote="dennishoddy" data-source="post: 3548993" data-attributes="member: 5412"><p>Good advice on the timing issues with buffers and springs.</p><p>For the OP, There are a lot of idiosyncrasies in tuning the rifle. Most factory uppers are over gassed on purpose to increase reliability, but adjustable gas blocks and the correct buffer along with a brake on the muzzle can reduce the recoil to zero. If your going to be taking one aimed shot at a time, a standard AR upper will do the job. If tuning one for competition where fast target acquisition is the key, you will need to make those mods.</p><p>One building a rifle wonders why a 55 grain is accurate in their rifle while a heavier bullet is not? </p><p>It's all about the rifling. 1:9 shoots the lighter bullets great, 1:7 is for heavier bullets. </p><p>Lots of factors in other calibers to determine the right twist for the bullet to be used, but this is for the .223/5.56.</p><p>Good luck on your build!</p><p>OSA is a good place to look for used parts. People buy an entire rifle, decide they want to mod it and put the parts up for sale at a reasonable price. I built my first with this method. When $400 DPMS AR's were going for $1000+ during the obama days, I built one with used parts under $500. </p><p>You can get a good deal on some parts from folks that know your looking to actually build to use vs some on here that are gouging for prices in this new more expensive world to resell and make a profit.</p></blockquote><p></p>
[QUOTE="dennishoddy, post: 3548993, member: 5412"] Good advice on the timing issues with buffers and springs. For the OP, There are a lot of idiosyncrasies in tuning the rifle. Most factory uppers are over gassed on purpose to increase reliability, but adjustable gas blocks and the correct buffer along with a brake on the muzzle can reduce the recoil to zero. If your going to be taking one aimed shot at a time, a standard AR upper will do the job. If tuning one for competition where fast target acquisition is the key, you will need to make those mods. One building a rifle wonders why a 55 grain is accurate in their rifle while a heavier bullet is not? It's all about the rifling. 1:9 shoots the lighter bullets great, 1:7 is for heavier bullets. Lots of factors in other calibers to determine the right twist for the bullet to be used, but this is for the .223/5.56. Good luck on your build! OSA is a good place to look for used parts. People buy an entire rifle, decide they want to mod it and put the parts up for sale at a reasonable price. I built my first with this method. When $400 DPMS AR's were going for $1000+ during the obama days, I built one with used parts under $500. You can get a good deal on some parts from folks that know your looking to actually build to use vs some on here that are gouging for prices in this new more expensive world to resell and make a profit. [/QUOTE]
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