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Old August 27, 2019, 05:09 PM   #2
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Join Date: September 6, 2009
Posts: 1,327
RRA's 16" lightweight 'Mountain Rifle' AR at 6.2lbs sounds great until you notice that it doesn't have any sights or a sling so it's incomplete as sold. Further, it's got a rail which just begs one to add more 'stuff' to weigh it down.

I started with a RRA Elite CAR A4 mid-length gas, HBAR carbine I bought 14 years ago and after loading it up with junk for the first year, I realized that I wanted light weight. 12 years ago, RRA didn't offer a lightweight barrel option like they do now so, I sent the upper to Steve at ADCO to have the barrel re-profiled as a lightweight and shortened to 14.7" with a silver soldered A2 FH. That took off almost a full 1½ lbs of weight alone.

Even though it's shorter, it's now more accurate as Steve gave it a great crown on the muzzle. It's a great bowling pin shooter at 200 yds even with iron sights so it's plenty accurate with the included 2 stage NM trigger and my 55 and 62grn Hornady fmj handloads.

I completed the lightweight makeover by adding a CTR buttstock, Enidine buffer, MOE mid length handguard, a Troy BUIS rear sight, a customized pistol grip to fit my hand much better, a mountain trigger guard, and a simple cotton sling.

Simple, lightweight, accurate, and reliable. As it sits as a complete usable carbine, empty it weighs 5lbs 15oz and loaded with a full 30rd mag, it weighs 7lbs 0oz. Now that's a real 'Lightweight Mountain Rifle'. The proof of the end product is that I've had it this way for 12 years and have no desire to mod anything on it.


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