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Posted: 2/13/2013 7:49:14 AM EDT
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I have a carbine length barrel, low pro block, carbine tube.....what size hand guard is needed to cover my gas block ?
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So as long at its a "mid-length" it will do what im looking for? Also I see alot sell by the "inch" size...what size is the midlength system? I don't think that mid length (9") will cover completely. Specter length as mentioned above was designed for your purpose. I believe that they're 10"+ Measure what you need and then check the Yankee Hill Machine website for more details. |
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My YHM Diamond "Specter" length just showed up 2 days ago.
I don't have it installed yet, but with the barrel nut screwed into the forend, not counting the little bit of top rail that extends to meet the upper, it is exactly 9 3/4" long, measured using an aluminum yardstick ( not a tape. ) It's supposed to cover a JP low profile gas block I ordered, when matched with a 16" carbine gas barrel. Hope this helps. |
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Quoted:
My YHM Diamond "Specter" length just showed up 2 days ago. I don't have it installed yet, but with the barrel nut screwed into the forend, not counting the little bit of top rail that extends to meet the upper, it is exactly 9 3/4" long, measured using an aluminum yardstick ( not a tape. ) It's supposed to cover a JP low profile gas block I ordered, when matched with a 16" carbine gas barrel. Hope this helps. Thats perfect, Thanks! |
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Quoted:
My YHM Diamond "Specter" length just showed up 2 days ago. I don't have it installed yet, but with the barrel nut screwed into the forend, not counting the little bit of top rail that extends to meet the upper, it is exactly 9 3/4" long, measured using an aluminum yardstick ( not a tape. ) It's supposed to cover a JP low profile gas block I ordered, when matched with a 16" carbine gas barrel. Hope this helps. Thats perfect, Thanks! Anytime. |
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Does anyone have a picture of their carb. barrel and gas system being covered by the rail? Thanks Not mine, but here you can see the gas block in the carbine location being covered by the YHM Specter rail. 
Here is the quote from the Yankee Hill Machine site: Specter vs. Midlength Forearms YHM would like to clear up some confusion between our Midlength and Specter forearms. The Midlength forearm is designed for a MIDLENGTH gas system (A system created between rifle and carbine length gas systems). The Specter forearm is designed to cover the gas block on a CARBINE length gas system. And if you look at the fore arm lengths, you see the actual lengths. Lightweight Free Float 4 Rail AR-15 Forearms Mid-Length (Overall length: 9.2 in -Weight 12.4 oz. ) (YHM-9634) Specter Length (Overall length: 9.675 in - Weight 12.9 oz.) (YHM-9638) and Four Rail Free Float AR-15 Forearms Mid-Length (Overall length: 9.2 in - Weight 17.5 oz.) (YHM-9603) Specter Length (Overall length: 9.675 in - Weight 18.2 oz.) (YHM-9477) So the Specter Length forearm is almost half an inch longer than the Mid-Length forearm. What this means and how it impacts your build is up to you. |
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So as long at its a "mid-length" it will do what im looking for? Also I see alot sell by the "inch" size...what size is the midlength system? You said you have a Carbine length gas system. The only Free Float hand guards I use are APEX. Their mid length hand guard will cover your gas block. I have 2 of them on carbine gas rifles. Oh, they are 9 inches. Check them out at Rainier Arms Solid as a rock, and you can put rails where YOU want them. |
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Is there a hand-guard for a 16' carbine system that will extend even further out?....maybe a 13'' hand guard on a 16'' barrel? I would assume, if you are using a low profile gas block, and a 16" barrel w/ carbine length gas port that you can use any FF forend longer than the YHM Specter 9 3/4" model. Anything shorter and the end cap would hit the gas block, or the gas block would stick out. This assumption is based on the fact that the special "specter" length from YHM is made specifically to hide the gas block, and its 1/2" longer than their mid-length. In other words, they added 1/2" to their mid length to hide the gas block. This wont prevent you from adding another mile 
Someone can correct me if I'm wrong here. Personally, I went with a little bit heavier "Diamond" series forend, as opposed to the "light" series. The forends are actually fairly heavy, and I didn't want a whole hell of alot of weight hanging out the front. If you go with a longer one, you might consider one of the "light" models that aren't as heavy. Just something to consider. Although, the upside to a heavy front end is less muzzle rise. |
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