Cw434 Posted July 6, 2011 Report Share Posted July 6, 2011 I have an oracle 308 with carbine length gas system and a 16" heavy barrel. I really want to get the apex systems 9" mid length handguard. I am looking for a low profile gas block that I can put on myself( easy as possible) and will allow the apex forearm to clear it. There are quite a few out there and I hope some of you might be able to help me narrow down my options. I think the apex has an offset mount and I'm not sure if that will affect my choice Quote Link to comment Share on other sites More sharing options...
Jgun Posted July 7, 2011 Report Share Posted July 7, 2011 I have the Apex FF tube on my 300 (AR 15 platform) and used the PRI low pro adjustable. The Vltor low pro would also clear, I believe that PRI has that type of GB to fit most any GB pad OD. I'm not familiar with the set up of your gun, but standard rule of thumb is that if your going to cover the GB with the FF tube, you'll need to use something like the ones I've mentioned. If, on the other hand, your gas block will be in front of the handguard, you should be able to use whatever one you like as long as it has the right bore ID to match your barrel OD and there are no clearance issues with the gas tube and the barrel OD behind the gas block. Quote Link to comment Share on other sites More sharing options...
Robocop1051 Posted July 7, 2011 Report Share Posted July 7, 2011 I suggest PRI also. They come in more diameters than the VLTOR/Noveske. PRI also makes their low pro GB adjustable.You can also youtube on how to cut and file a front sight GB into a low pro GB. Cheap and easy. I know plenty of guys who have done it. Quote Link to comment Share on other sites More sharing options...
imschur Posted July 7, 2011 Report Share Posted July 7, 2011 Ill toss JP in there too Quote Link to comment Share on other sites More sharing options...
98Z5V Posted July 7, 2011 Report Share Posted July 7, 2011 I suggest PRI also. I'll vote this one, also. <thumbsup> Doesn't matter if you order the stainless or the park'd version. Quote Link to comment Share on other sites More sharing options...
Cw434 Posted July 7, 2011 Author Report Share Posted July 7, 2011 I like the vltor and pri but I'm having trouble finding the od of my barrel. Anyone know the od of a 16" 308 heavy barrel? It says heavy instead of bull which confuses meAlso would I have to take off my entire barrel to put the gb on? I have a permanent flash hider Quote Link to comment Share on other sites More sharing options...
Jgun Posted July 7, 2011 Report Share Posted July 7, 2011 As I stated in my last post, I'm not familiar with your specific setup, but I'm thinking that your permanently fixed flash hider is going to be a problem. The 3 most common od's for the GB mounting area of the AR barrels is .750", .875", and .936" unless yours is .936" (doubtfull) and your FH is smaller than that, it would have to be removed to change the GB. You should take a look at the GB's of Bob at Firebird Precision. If memory serves me correctly, I think he may have a two piece GB, but I have no idea whether it will fit under the Apex FFtube or not. Quote Link to comment Share on other sites More sharing options...
Jgun Posted July 7, 2011 Report Share Posted July 7, 2011 I made a mistake before when I reccommended the Firebird GB, describing it as two piece. The one I was thinking of was the JP Rifles, JPGS8 two piece GB, but I see that one has a .936 bore so is unlikely to fit. Sorry for the bad lead. Quote Link to comment Share on other sites More sharing options...
98Z5V Posted July 8, 2011 Report Share Posted July 8, 2011 There's only one 2-piece out there that's a lo-pro gas block - that I know of...Yankee Hill Machine, their Specter gas block. It only comes in a 0.625 and a .750 flavor. Minimum inner diameter of the rail must be 1 5/8" to clear the Specter .750 gas block.Cw434, the gas block dimensions (or barrel size at the gas block mount) for the Oracle .308 should be listed on the DPMS website. Quote Link to comment Share on other sites More sharing options...
survivalshop Posted July 8, 2011 Report Share Posted July 8, 2011 I think there replacement bbl., 16"HB., is 0.750". Not sure if its the same bbl. that's on your rifle .If you are unsure just call them or remove the GB & measure bbl. dia @ GB attachment point. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.