Bushmaster XM15-E2S 5.56 NATO Semi-Auto AR-15, Custom-Assembled with PSA 16-inch 1:7 MP Chrome-Lined Barrel & Midwest Industries Free-Float Rail, 10+1, 5 Magazines
This Bushmaster XM15-E2S stands out as a custom-assembled AR-15 built on a Bushmaster lower and an aftermarket flat-top upper. It features a Palmetto State Armory 16-inch 1:7 MP chrome-lined barrel and a Midwest Industries free-float aluminum handguard with a continuous, T-marked Picatinny top rail. The rifle includes a fixed rifle-length stock and is configured with a magazine-release lock/compliance device. Five 10-round magazines are included.
Condition
Overall Condition: Very good condition, showing only light, superficial signs of prior handling or use.
Bore Overall Condition: Good - Clean, well-maintained, minor wear marks.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
This firearm presents in great shape overall. Minor scratches and small blemishes are visible on exterior surfaces. The bore appears bright and shiny.
What’s Included
- Bushmaster XM15-E2S 5.56 NATO semi-automatic rifle (assembled from mixed components: Bushmaster lower with aftermarket upper)
- 5x 10-round magazines (mix includes a Magpul PMAG GEN M3 polymer magazine, USGI-pattern metal magazines, and another polymer magazine)
- Midwest Industries free-float aluminum handguard with continuous Picatinny top rail (installed)
- Palmetto State Armory 16-inch 1:7 MP chrome-lined barrel (installed)
- A2-pattern flash suppressor (installed)
- Magazine-release lock/compliance device on the lower (installed; brand unmarked)
- Fixed rifle-length stock with trapdoor buttplate (installed)
Built on a Bushmaster XM15-E2S lower marked B.F.I. Windham, ME, this rifle is assembled from mixed components and configured in 5.56mm NATO. It uses a semi-automatic direct impingement system and accepts STANAG pattern magazines. The upper is a flat-top configuration with a forward assist and an ejection port cover.
The Palmetto State Armory 16-inch barrel is MP inspected and chrome-lined with a 1:7 twist rate. The barrel is threaded 1/2x28 and is fitted with an A2-pattern flash suppressor. This setup provides standard compatibility with common 5.56 muzzle devices.
A Midwest Industries free-float aluminum handguard is installed, and together with the flat-top upper, it provides a continuous, T-marked Picatinny top rail. This uninterrupted rail section allows straightforward alignment along the top of the receiver and handguard. No sights or optics are installed.
The rifle is equipped with a fixed rifle-length stock featuring a trapdoor buttplate and a rear sling loop, plus an A2-style polymer grip with a finger ridge and checkering. A magazine-release lock/compliance device is installed on the lower. The length of pull measures 13.5 inches, and the controls include a manual safety.
Five 10-round magazines come with the rifle. The mix includes a Magpul PMAG GEN M3 polymer magazine, USGI-pattern metal magazines, and another polymer aftermarket magazine.




