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Posted: 5/4/2011 7:37:22 AM EDT
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I was planning to install a free float handguard to this rifle but now I'm kind of liking how light and handy it is. It is a RRA 16" 1:9" chrome lined M4 profile barrel, RRA 2 stage match trigger, TA01 ACOG. It will shoot 1.5" or smaller at 100m with my handloads or Prvi Partisan 75gr BTHP.
The culprit: 
I will add a LaRue mount for the ACOG and a mini red dot (probably a PA clone until I can afford an RMR) at a 45 degree angle from the upper receiver rail. Probably get a good two point sling and a swivel mounted at the rear of the handguard. Maybe a MOE just for cosmetics. |
| True but only a CF would be as light as the MOE and it wouldn't be as durable. Plus, if I had it free floated I'd want a bipod. I'm leaning against it. I have a more precision oriented rig for 3 gun with freefloat, 3-9X40mm Burris, and a bipod. The wandering POI is some concern but dammit I sure like this thing being so light. |
throw a carbon fiber tube on that bitch. Put a sling stud at 6 o'clock if it so inspires you and a 2 or 3 inch rail bit at 9 or 3 for a light. + on accuracy and probably the same weight you run now, maybe lighter. I did the same to my bushy. Same set up you have and went from 2 inch groups to .75 in groups. Same acog, magpul fore arm and pretty much the same barrel. 
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| Buy you one of these http://www.brownells.com/.aspx/pid=4998/Product/CLARK_CUSTOM_AR_15_CARBON_FIBER_HANDGUARD cut it to length and be done with it. you can add rails or whatever you want. I have one on My lightweight AR it feels lighter than my Ruger 10/22, once you JB weld it that bad boy will never come off that barrel nut. |
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Buy you one of these http://www.brownells.com/.aspx/pid=4998/Product/CLARK_CUSTOM_AR_15_CARBON_FIBER_HANDGUARD cut it to length and be done with it. you can add rails or whatever you want. I have one on My lightweight AR it feels lighter than my Ruger 10/22, once you JB weld it that bad boy will never come off that barrel nut. How resistant are those to abrasion and impact? Is there any way I could install it with a notch cut for the FSB so the handguard extended up almost to the suppressor mount? Would that make it significantly weaker? Can I drill it for a short rail for a light and sling mount without weakening it? |
| If you are not sure about free floating the barrel, I would suggest getting a rail that is truly drop-in such as the DD 7.0 Omega or KAC RASII (KAC has their comestic seconds on sale for $150). If you find that you do like or need a free flaoted barrel you can easily revert the upper back to its current configuration. |
| M4 profile is essentially the same thing but with a cut up front for an M203. Government profile is just a term used to describe the way military barrels are light under the handguards and heavier out front, whether they are A2 or M4. A true M4 barrel is 14.5" 1:7" twist, chrome lined, feed ramps, and light under the handguard. This barrel has the profile of an M4 barrel. |
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Buy you one of these http://www.brownells.com/.aspx/pid=4998/Product/CLARK_CUSTOM_AR_15_CARBON_FIBER_HANDGUARD cut it to length and be done with it. you can add rails or whatever you want. I have one on My lightweight AR it feels lighter than my Ruger 10/22, once you JB weld it that bad boy will never come off that barrel nut. How resistant are those to abrasion and impact? Is there any way I could install it with a notch cut for the FSB so the handguard extended up almost to the suppressor mount? Would that make it significantly weaker? Can I drill it for a short rail for a light and sling mount without weakening it? It is very tough i weigh 205 and can stand on it without it breaking, abrasion wise it will scuff but i have removed it with a pipe wrench before in a pinch and it just has a couple of gouge marks in it. i am not sure about the notch for the FSB i am sure you could mark it out and cut it with a dremel then sand it to perfection but i don't know about that first hand. I bought the same thing i posted the link to and cut it down using a hand saw while it wasn't hard to cut through it i could see how it would be very easy to mess up cutting for an FSB. The one in the link comes with a bipod stud on the front which is the main reason i ordered it as far as the rail goes if you can drill the holes and fasten it securely with loctite it will be fine. I have seen pictures of the clarks tubes with short rails like you want i will see if i can find some. |
| PRI makes a very nice one with rails but it is expensive PRI tube there are other lengths also. |
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if you don't need a rail, then don't get one. but with that being said, there are several rails on the market that weight the same as the MOE does. a MOE hand guard with the delta ring, and handguard cap weighs over 8 ounces. the DD omega is like 9 ounces with the delta ring. the new rail from centurion arms is 8.5 ounces. and the DD lite rail is 8 ounces.
so adding a rail won't necessarily be adding weight. but it may be a waste of money. |
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PRI makes a very nice one with rails but it is expensive PRI tube there are other lengths also. You ain't kidding, $329.99!  Looks really nice, though.
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build another upper and free float it......put the ACOG on whatever you plan to keep after trying both. Then keep both anyways, SBR the lower, and cut your M4 profile upper down to 12.5" or so and get an Aimpoint. any more questions?  I already have: 11.5" A2 SBR 14.5" carbine with rails, CCO, curb feelers, etc. 16" (pictured) 20" rifle with A2 stock, 3-9X40 and mini red dot, free floated handguard, bipod 16" pencil thin on Cav Arms lower 20" standard rifle I've flirted with the do-all carbine several times and didn't like the weight. I have a feeling that's the road I'm going down yet again. Looks like I need another damn rifle.
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build another upper and free float it......put the ACOG on whatever you plan to keep after trying both. Then keep both anyways, SBR the lower, and cut your M4 profile upper down to 12.5" or so and get an Aimpoint. any more questions? I already have: 11.5" A2 SBR 14.5" carbine with rails, CCO, curb feelers, etc. 16" (pictured) 20" rifle with A2 stock, 3-9X40 and mini red dot, free floated handguard, bipod 16" pencil thin on Cav Arms lower 20" standard rifle I've flirted with the do-all carbine several times and didn't like the weight. I have a feeling that's the road I'm going down yet again. Looks like I need another damn rifle. he who dies with the most toys.......
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