Geissele Super Duty MOD1-A 5.56mm Ambidextrous 13.9" Bbl Black SBR (NFA) 08-760B

Not every rifle needs to choose between compact and capable - the Geissele Super Duty MOD1-A 5.56mm 08-760B in this 13.9" configuration is built to hold both at once. It's short enough to move fast through tight spaces and long enough that velocity doesn't fall off a cliff downrange, all wrapped in a low-profile black finish.

The barrel itself does a lot of the work here: cold hammer forged, chrome-lined, cut to 13.9" with a 1:7 twist, and paired with a mid-length gas system running through Geissele's Super Compact Gas Block. That combination is what keeps cycling smooth and felt recoil manageable across a wide range of 5.56 loads, rather than just one narrow band of ammunition. Every Geissele Super Duty SBR in this family shares the same underlying gas tuning, so shorter barrel lengths don't come at the cost of reliability.

Ambidextrous controls are fully built into the receiver, not bolted on as an afterthought - a left-side magazine release below the Maritime Bolt Catch and a dust-cover-actuated bolt catch/release on the right mean reloads stay fast and instinctive regardless of which hand is running the gun. The SSA-E X® trigger with Lightning Bow® backs that up with a crisp, repeatable break, while a 12.9" MK16 rail with Geissele's Center Tab mating keeps optics locked in place shot after shot.

As one of the shorter platforms in the Geissele Super Duty MOD1 lineup, this 5.56 NATO rifle configuration is built for shooters who need a rifle that performs the same whether it's clearing a structure or holding a line at distance.

Key Features:

• 13.9" cold hammer forged, chrome-lined barrel, 1:7 twist
• Mid-length gas system w/ Super Compact Gas Block
• Fully ambidextrous magazine release, bolt catch, and release controls
• SSA-E X® trigger with Lightning Bow®
• 12.9" MK16 rail w/ Geissele Center Tab
• B5 Systems Enhanced SOPMOD stock, mil-spec buffer tube
• Reliability Enhanced Bolt Carrier Group w/ Geissele Stressproof Bolt®
• Geissele Super Duty 13.9 black finish for a versatile, low-visibility build

08-760B carries full-size Super Duty reliability into a shorter, faster-handling package.