Sig Sauer MCX-SPEAR LT AR Pistol in .300 AAC Blackout with 9 in Threaded Barrel, Coyote/Tan Finish
This Sig Sauer MCX-SPEAR LT is a .300 AAC Blackout AR pistol configured with a 9 in carbon steel barrel, short-stroke gas piston action, and a fast 1:5 twist. It features a free-float M-LOK handguard, full-length top Picatinny rail, folding iron sights, and a left-side folding/hinged charging handle. Finished in coyote/tan on an aluminum alloy receiver, it is identified by Sig Sauer markings and the manufacturer part number PMCX-300B-9B-LT.
CONDITION
Overall Condition: Excellent condition, showing only faint signs of any prior use or handling.
Bore Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
Specific Condition Notes: This firearm has very minor, superficial scratches and small blemishes. The bore is bright and clean.
WHAT'S INCLUDED
- 1x DURAMAG HX-AR Series I AR-pattern 30-round magazine marked "300 BLK" / "300 AAC"
- Documents
- Chamber lock
Built around the MCX-SPEAR LT series, this pistol uses a short-stroke gas piston system and an aluminum alloy receiver. The receiver is marked with a circular SIG medallion logo and "SIG MCX MULTI-CAL.", with "SIG SAUER INC / NEWINGTON / NH USA" on the right side.
The 9 in carbon steel barrel is threaded 5/8-24 and paired with a 1:5 twist rate. The muzzle device appears to be a 3-prong flash-hider-style unit.
Up top, it includes a full-length Picatinny rail for accessory mounting, plus a rear Picatinny-pattern interface section. The free-float M-LOK handguard provides additional mounting flexibility while keeping the front end streamlined.
Controls and furniture include a flat-faced trigger, a left-side folding/hinged charging handle, and a SIG SAUER-marked pistol grip. This example comes in a coyote/tan finish and is supplied with folding front and rear iron sights.