I shoot a Rock River AR with a 16" barrel (it originally came as an "Elite CAR A4", and I sprung for chrome lining and a 5.56mm chamber). It's accurate, but quite nose-heavy, even without a light on it; I'm not sure if it'd be considered an HBAR or just "medium weight", but it is quite a bit heavier than it needs to be for my purposes (HD, recreational plinking out to 200 yards, and local USPSA carbine matches). Since this isn't a bench gun, I'd really like to put it on a diet. What would be involved in buying something like this: http://www.del-ton.com/AR_15_16_Mid_Length_LW_Barrel_p/bl1088.htm and having it fitted to my current upper receiver, and what's the going rate for assembly? (Or is that something that can be done with an inexpensive tool?) Does anyone have experience (good or bad) with Del-Ton chrome lined barrels? I know it's 1:9, but I am OK being limited to shooting 69gr and under since my current barrel is also 1:9. Of course, I'd prefer a BCM or Daniel Defense 1:7 barrel, but the Del-Ton is $154 and the only lightweight BCM 16" middy I see is $309 (ouch) and is out of stock to boot. Are there any other good options cheaper than the BCM/DD that I'm missing? Advice is much appreciated!