Convert AR-15 Gas Pistons
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Not only is the 6x48 big on a rifle, but it takes up so much rail estate there is no room for a back-up iron sight.
This photo gallery is an excerpt from the new Gun Digest Book of the AR-15, Vol. 4.
Recommended AR-15 resources for gun owners:
New! – The Gun Digest Book of the AR-15 Vol. IV
The Gun Digest Book of the AR-15 Vol. III
The Gun Digest Book of the AR-15 Vol. II
The Gun Digest Book of the AR-15 Vol. I
Gunsmithing the AR-15, How to Maintain, Repair & Accessorize
New! The Gun Digest Buyer's Guide to Tactical Rifles
Find more gun books, DVDs and downloads at gundigeststore.com.