Bad Attitude Dept Custom AR-15 Pistol, Colt M4A1 Carbine Clone-Style, .300 AAC Blackout, 7.5 in Barrel, FDE
This AR-15 pistol is a custom build by Bad Attitude Dept chambered in .300 AAC Blackout, combining a 7.5 in barrel with a compact, free-float M-LOK handguard and a mixed FDE/black/gray finish. It features Colt M4A1 Carbine clone-style rollmarks on the lower, an ambidextrous safety, a Radian Raptor ambidextrous charging handle, and an adjustable stabilizing brace. Despite the lower’s 5.56 marking, the caliber is confirmed as .300 BLK, and it includes a 30-round PMAG clearly marked for 300 BLK.
Condition
Overall Condition: Good condition, showing some signs of prior use and handling.
Bore Condition: Good - Clean, well-maintained, minor wear marks.
Bore Rifling: Good Rifling - Intact, well-defined lands and grooves.
Specific Condition Notes: There are some scuffs and scratches on external surfaces. The ambidextrous magazine release makes contact with and rubs against the bolt release lever.
What’s Included
- 1x 30-round Magpul PMAG marked for 300 BLK (7.62x35)
- Radian Raptor ambidextrous charging handle (installed)
- B5 Systems pistol grip (installed)
- Textured M-LOK rail cover panels on the handguard (installed)
- Adjustable pistol stabilizing brace in FDE/tan (installed)
- Extended bolt-catch surfaces with inside-trigger-guard bolt release lever (installed)
This build uses a 7.5 in steel barrel with an A2-style flash hider and a direct-impingement, semi-automatic action. The low-profile gas block is secured by set screws for a clean profile and reliable alignment.
The aluminum receivers, handguard, and brace housing wear an FDE/tan finish, while the receiver extension (buffer tube) is raw/gray and the A2 flash hider, exposed barrel sections, and several small parts (e.g., dust cover) are black.
The free-float aluminum handguard is approximately 7 in long with M-LOK slots and a full-length top Picatinny rail, and textured rail panels are installed for added grip.
Controls and furniture are thoughtfully upgraded, including an ambidextrous safety selector, a Radian Raptor ambidextrous charging handle, a B5 Systems pistol grip, and an adjustable pistol stabilizing brace. Extended bolt-catch surfaces and an inside-trigger-guard bolt release lever aid fast manipulation.
The slick-side upper omits the forward assist while retaining a brass deflector and ejection port cover. Capacity is 30+1, and the included PMAG is clearly marked for .300 BLK to match the build’s confirmed caliber.
The lower displays Colt’s rampant logo and clone-style rollmarks reading “PROPERTY OF U.S. GOVT / M4A1 CARBINE,” “COLT DEFENSE, HARTFORD, CONN., U.S.A.,” and “MFG BY: BAD ATTITUDE DEPT,” along with “NAVY 18-1.” Note that while the lower is marked “CAL. 5.56 MM,” this pistol is confirmed in .300 AAC Blackout.