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Re: Sig 556 rebarrel
Having a number of 556s in various flavors, I've often wondered how difficult a barrel change would be. Obviously a much more involved undertaking than for an AR. My question is how difficult would it be to do a 16" barrel replacement, but using a barrel that is heavier than the thin little whippy barrels that come from the factory? Would it even be possible given the placement (limited distance) between where the barrel and gas tube enter the receiver? I have a 556 DMR with a heavy barrel and the gas tube is a really tight fit due to contact with the wider base of the barrel (chamber).
Having a number of 556s in various flavors, I've often wondered how difficult a barrel change would be. Obviously a much more involved undertaking than for an AR. My question is how difficult would it be to do a 16" barrel replacement, but using a barrel that is heavier than the thin little whippy barrels that come from the factory? Would it even be possible given the placement (limited distance) between where the barrel and gas tube enter the receiver? I have a 556 DMR with a heavy barrel and the gas tube is a really tight fit due to contact with the wider base of the barrel (chamber).
Re: Sig 556 rebarrel
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: gstaylorg</div><div class="ubbcode-body">Having a number of 556s in various flavors, I've often wondered how difficult a barrel change would be. Obviously a much more involved undertaking than for an AR. My question is how difficult would it be to do a 16" barrel replacement, but using a barrel that is heavier than the thin little whippy barrels that come from the factory? Would it even be possible given the placement (limited distance) between where the barrel and gas tube enter the receiver? I have a 556 DMR with a heavy barrel and the gas tube is a really tight fit due to contact with the wider base of the barrel (chamber). </div></div>
Its definitely a much more tricky operation to rebarrel a Sig 556 than an AR. This one was fitted with a much heavier barrel than the original but as you can see from the photos I had to machine the barrel to allow room for the gas block. This job was made particularly hard fore me as my client insisted on having the gas port bang on in the centre of the groove and not touching anywhere near the land, the real problem here was the groove measured exactly 1.5mm and the gas port was also exactly 1.5mm so that made it very difficult and totally unnecessary in my opinion but the customer is always right. You could infact get away with having the gas port on the land but thats just the way I had to do it. A good smith should have no problem doing this but its definitely a tricky job.
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: gstaylorg</div><div class="ubbcode-body">Having a number of 556s in various flavors, I've often wondered how difficult a barrel change would be. Obviously a much more involved undertaking than for an AR. My question is how difficult would it be to do a 16" barrel replacement, but using a barrel that is heavier than the thin little whippy barrels that come from the factory? Would it even be possible given the placement (limited distance) between where the barrel and gas tube enter the receiver? I have a 556 DMR with a heavy barrel and the gas tube is a really tight fit due to contact with the wider base of the barrel (chamber). </div></div>
Its definitely a much more tricky operation to rebarrel a Sig 556 than an AR. This one was fitted with a much heavier barrel than the original but as you can see from the photos I had to machine the barrel to allow room for the gas block. This job was made particularly hard fore me as my client insisted on having the gas port bang on in the centre of the groove and not touching anywhere near the land, the real problem here was the groove measured exactly 1.5mm and the gas port was also exactly 1.5mm so that made it very difficult and totally unnecessary in my opinion but the customer is always right. You could infact get away with having the gas port on the land but thats just the way I had to do it. A good smith should have no problem doing this but its definitely a tricky job.
Re: Sig 556 rebarrel
Looks great, what was the cost on this and what make barrel?
Looks great, what was the cost on this and what make barrel?
Re: Sig 556 rebarrel
The lower is not a 556? Is it a parts build from Colorado Guns? I think you did a great job, what kind of accuracy is it getting?
The lower is not a 556? Is it a parts build from Colorado Guns? I think you did a great job, what kind of accuracy is it getting?
Re: Sig 556 rebarrel
Can anyone reccommend a a smith that can do rebarreling for the 556?
Can anyone reccommend a a smith that can do rebarreling for the 556?
