Recently DPMS did a run of stripped A-15 lower receivers with an Eagle, Globe, & Anchor Marine Corps emblem laser etched onto the right side of the magazine well. Here is a link to the product page.
I had previously purchased a DPMS BL-AP4 14.5 inch chrome lined barrel
on which I pinned and welded a Sabre Defense extended A2 flash hider for an overall 16' legal length. My plan was to keep this as a future replacement for the 5.45 cal barrel on my S&W M&P-15R someday down the road. I figured I would convert it to 5.56mm whenever the 5.45 barrel was shot out. Anyway, when I saw the new USMC DPMS receiver I got other ideas in my head.
So I built the upper with an M16 bolt carrier group and a Midwest Industries MCTAR-20 2 piece free float quad rail hand guard. I like this Midwest design because it is rock solid and works with pinned and welded flash hider builds where you can't remove the front sight base. On the lower, I went with a Magpul MIAD full kit grip system, a single point sling adapter, and a Magpul CTR commercial diameter stock on a standard DPMS receiver extension/buffer tube.
I topped it off with one of the new EoTech XPS 2-0 Holographic Weapon Sights. Since I am using a fixed rear sight, I elevated the EoTech HWS on a YHM-220 riser from Yankee Hill Machine. The new XPS units run on a CR123 lithium battery which has much improved life over the previous compact N cell version, but if the holographic sight fails, the iron sights can be viewed though the bottom of the Eotech sight window.
I would recommend this DPMS USMC lower receiver for any Marines out there considering a new AR-15 build.