Not a bad idea, I assume you are familiar with the ar platfrom from you Marine days. Do you tend to shoot it well? However, you could still drop 100 bucks on a brake.
Well I was the second highest shooter in 100/200/300/500yrd shoot also rapid fire and slow fire,standing,kneeling and the prone. This was back in 99 and I scored a 248 out of 250 points. This was also with the whole company approx 800 Marines. The shot I messed up on was the 500yrd prone the wind picked up right as I shot and I did not catch it. So yeah I love shooting the AR platform I'm trying to buy one right now just trying to save my money.