Bushmaster XM15-E2S HBAR Carbine A3 5.56 NATO, Flat-Top A3 with A2 Sights, 11.5 in Barrel with Permanently Attached Muzzle Device to 16 in, Excellent Condition
This Bushmaster XM15-E2S HBAR Carbine A3 stands out for its heavy-profile 5.56 NATO barrel, A3 flat-top upper with detachable carry handle, and factory configuration that uses an 11.5-inch barrel with a permanently attached approximately 5.5-inch three-slot muzzle device to achieve a 16-inch legal barrel length. It comes in excellent condition and includes nine USGI-pattern 30-round magazines.
Condition
Overall Condition: Excellent condition, showing only faint signs of any prior use or handling.
Bore Overall Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
Specific Condition Notes: There are minor scratches and blemishes present.
What’s Included
- Bushmaster XM15-E2S HBAR Carbine A3 rifle (5.56 NATO)
- Nine 30-round USGI-pattern aluminum magazines (LaBelle Industries packaging visible on several mags)
The A3 configuration features a flat-top Picatinny upper with a detachable carry handle using an A2 rear sight marked 6/3, paired with a fixed A2 front sight base and square post. This setup provides the classic A2 sight picture on a modern flat-top receiver.
The steel HBAR uses a 1:9 twist and is barrel-marked "B MP 5.56 NATO 1/9 H BAR." It employs an 11.5-inch barrel with a permanently attached approximately 5.5-inch three-slot muzzle device to meet the 16-inch legal barrel length. A carbine-length gas system is used.
Furniture includes a fixed A2 polymer stock with a trap-door compartment, a checkered buttplate, and a rear sling loop, along with an A2 pistol grip. The carbine-length, two-piece ribbed polymer handguard completes the classic carbine layout, and a fixed A2 front sling swivel is fitted.
The aluminum receiver set wears a matte black finish and incorporates a forward assist, brass deflector, and an ejection-port dust cover. It uses the STANAG magazine interface for broad magazine compatibility and is marked "B.F.I. WINDHAM, ME. U.S.A." Capacity is 30+1 with 5.56 NATO ammunition.
Nine included USGI-pattern aluminum 30-round magazines add practical value, with LaBelle Industries packaging visible on several of them.




