Digby
Member
Hi guys
I'm toying with the idea of building an M16A1 clone. I would have the barrel maker make the 20" barrel "heavy" under the old triangle handguards, then step it down to .625" for under the front sight base, and then step it down again slightly after the front sight base to the threads. So, from the outside, the rifle would mimic an M16A1 with a pencil weight barrel, but under the handguards, it would be heavy so as to remain legal for a post 2013 AR build.
My question relates to fitting a heavy barrel under the triangle handguards. The original plan was to make the barrel 1" in diameter under the triangle handguards, but that might cause the barrel to interfere with the aluminum heat shield under the triangle handguards.
Has anyone attempted to build a post 2013 M16A1 clone? Can anyone advise on the maximum thickness of the barrel that would work under the old triangle handguards?
I did some Googling on this question and the answers are not consistent. Some say a heavy barrel will fit, others say it wont. Heavy is a relative term, so if you have a heavy barrel under the old triangle handguards, what are your barrel's dimensions?
Thanks in advance!
John
I'm toying with the idea of building an M16A1 clone. I would have the barrel maker make the 20" barrel "heavy" under the old triangle handguards, then step it down to .625" for under the front sight base, and then step it down again slightly after the front sight base to the threads. So, from the outside, the rifle would mimic an M16A1 with a pencil weight barrel, but under the handguards, it would be heavy so as to remain legal for a post 2013 AR build.
My question relates to fitting a heavy barrel under the triangle handguards. The original plan was to make the barrel 1" in diameter under the triangle handguards, but that might cause the barrel to interfere with the aluminum heat shield under the triangle handguards.
Has anyone attempted to build a post 2013 M16A1 clone? Can anyone advise on the maximum thickness of the barrel that would work under the old triangle handguards?
I did some Googling on this question and the answers are not consistent. Some say a heavy barrel will fit, others say it wont. Heavy is a relative term, so if you have a heavy barrel under the old triangle handguards, what are your barrel's dimensions?
Thanks in advance!
John