Stonewall
Member
First AR15 - Help ID Upper? +Range Report
Hey all! I finally bought my first AR! It was on consignment at a local gunshop. The lower is a Rock River Arms stamped LAR-15 5.56. The upper is a standard A2 20" has no manufacturing name but the shop said it was a FN upper. The barrel has no markings.
The right side of the front sightis stamped: F01 (then a circle type mark) 2
The top right of the Upper, directly in front of the rear sight: Keyhole shape stamp with three vertical dots.
Question: Is there anyway to positively ID the upper? Also is there any way for sure to tell if it is chambered for 5.56 or .223? I am assuming that it is a 1:9 twist.
Thanks in advance!
Hey all! I finally bought my first AR! It was on consignment at a local gunshop. The lower is a Rock River Arms stamped LAR-15 5.56. The upper is a standard A2 20" has no manufacturing name but the shop said it was a FN upper. The barrel has no markings.
The right side of the front sightis stamped: F01 (then a circle type mark) 2
The top right of the Upper, directly in front of the rear sight: Keyhole shape stamp with three vertical dots.
Question: Is there anyway to positively ID the upper? Also is there any way for sure to tell if it is chambered for 5.56 or .223? I am assuming that it is a 1:9 twist.
Thanks in advance!
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