Build or buy is a decision that you'll have to make. Building isn't difficult, but can sometimes require some tweaking and trouble-shooting after everything is put together and test-fired. Same is possible when buying something complete from a reputable source, but perhaps potential issues are reduced, in addition to possibly having support after the sale. I encourage people to build, but this assumes that they have the patience to research it and do it right, and are mindful that the first one might require a little extra effort to get it running right.
Factors to consider are intended purpose (to include accuracy needs / expectations), budget, and preferred timeline. In many cases, barrels and other parts are relatively scarce. Whether building or buying, if you want something by fall hunting seasons, it's time to get busy. Researching what's available, whether parts of complete uppers / lowers / rifles, might help your decision on whether to build or buy.
It's often said that the critical parts for an accurate AR-15 are the barrel, trigger, and scope. Everything else, for the most part, is user preference. A free-float handguard is certainly recommended, and there are some aspects of the build process that also contribute to an accurate rifle.
It's perfectly fine to buy or build a lower, and mate it to a different brand of upper that is bought or built.
You'll get plenty of advice and help on this forum, but you'll need to share more details (budget, timeline, etc) to get the most benefit.
All that being said, easiest and safest route might be to pick something out on Alexander Arms' website, then call to see how soon the item could be delivered. AA puts out a good product, and seems to offer excellent support if ever needed.
Factors to consider are intended purpose (to include accuracy needs / expectations), budget, and preferred timeline. In many cases, barrels and other parts are relatively scarce. Whether building or buying, if you want something by fall hunting seasons, it's time to get busy. Researching what's available, whether parts of complete uppers / lowers / rifles, might help your decision on whether to build or buy.
It's often said that the critical parts for an accurate AR-15 are the barrel, trigger, and scope. Everything else, for the most part, is user preference. A free-float handguard is certainly recommended, and there are some aspects of the build process that also contribute to an accurate rifle.
It's perfectly fine to buy or build a lower, and mate it to a different brand of upper that is bought or built.
You'll get plenty of advice and help on this forum, but you'll need to share more details (budget, timeline, etc) to get the most benefit.
All that being said, easiest and safest route might be to pick something out on Alexander Arms' website, then call to see how soon the item could be delivered. AA puts out a good product, and seems to offer excellent support if ever needed.
Drifter

