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Custom .300 Blackout Pistol – Franklin Armory Lower & Dead Air Xeno Setup

For Sale NEW AD
Price: 1,000.00 USD 1000 USD
Price is negotiable
Contact Information (520) 840-8604
Added 10-01-2026 22:18:27

Full Description

Description:

Selling a turnkey, custom-built .300 AAC Blackout AR pistol configured as an ultra-compact backpack/truck gun and dedicated suppressor host. Built on a factory Franklin Armory lower receiver and equipped with an authentic SB Tactical SBA4 5-position adjustable stabilizing brace.

IMPORTANT CALIBER WARNING / DISCLAIMER:

DO NOT CHAMBER 5.56 NATO OR .223 REMINGTON IN THIS FIREARM. LIKE ALL .300 BLACKOUT PLATFORMS, CHAMBERING .300 BLK ROUNDS INTO A 5.56 CHAMBER OR VICE VERSA CAN CAUSE CATASTROPHIC KABOOM / INJURY. BUYER IS SOLELY RESPONSIBLE FOR SAFE AMMUNITION IDENTIFICATION AND AMMO STORAGE SEPARATION.

Upper Receiver Assembly:

  • Chambering: .300 AAC Blackout (runs both subsonics and full-power supersonics).

  • Muzzle Device: Dead Air Xeno Omni Muzzle Brake (left-hand taper-thread mount designed to prevent suppressor backing off; ready for any Dead Air Xeno adapter or suppressor). (Not pinned and welded).

  • Gas System: Low-profile pistol-length gas system tuned for clean cycling.

  • Handguard: Slimline free-float M-LOK handguard with full-length top Picatinny rail.

  • Complete bolt carrier group and charging handle included.

Lower Receiver Assembly:

  • Lower: Franklin Armory AR-15 Lower Receiver (configured/transferred as a legal pistol receiver).

  • Brace: SB Tactical SBA4 5-position adjustable pistol stabilizing brace on standard carbine receiver extension.

  • Safety Selector: Upgraded Lantac precision safety selector.

  • Grip: Magpul MOE-K2+ rubber overmolded grip (steep vertical angle optimal for short-length-of-pull AR pistols).

  • Trigger: Smooth, crisp mil-spec fire control group.

Condition:

Pristine condition with less than 50 rounds fired total to verify gas cycling. Safe-kept, clean bore, and virtually zero wear on the bolt face, feed ramps, or receiver anodizing.

Terms of Sale:

  • Cash only (no trades).

  • Face-to-face transaction in the West Valley / Phoenix metro area.

  • Must be an Arizona resident legal to own firearms (21+ with valid AZ DL. Bill of sale completed at the time of transfer.



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Specific details

Willing To Ship? No

Location

Surprise

Post Details

Post ID 186871
Displayed 3
Expires 12-30-2026 22:18:27
Category Firearms

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