Noveske Rifleworks Irregular Defense Chainsaw SBR, 5.56 NATO, 11.5 in Fluted Stainless Barrel, FDE, NSR 10.75 M-LOK
This Noveske x Irregular Defense co-branded Chainsaw-series SBR pairs an 11.5 inch fluted stainless barrel with forged 7075-T6 receivers finished in Flat Dark Earth. Marked with distinctive "IRGLR DFNSE" branding and supported by a factory Certificate of Authenticity, it represents the Irregular Defense ID-prefix run from a collaboration that concluded in December 2024.
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: Minor exterior scratches and small blemishes are present from light handling; surfaces remain clean overall.
What’s Included
- Noveske factory cardboard box with product label
- Noveske Black Rifle Manual
- Certificate of Authenticity (Noveske x Irregular Defense)
- Noveske decals (includes flaming pig)
- 1x Magpul PMAG Window 30-round polymer magazine for 5.56x45
The forged Chainsaw receiver set anchors this build with 7075-T6 aluminum and an FDE finish that matches the adjustable stock and cheek riser. The lower is rollmarked "CAL MULTI" and "MODEL: IRREGULAR DEFENSE," while the upper and cheek riser carry co-branded "IRGLR DFNSE" markings. The ID-prefix serial denotes the Irregular Defense production run.
An 11.5 inch fluted stainless steel barrel delivers rigidity and corrosion resistance in a compact SBR format. The rifle operates via a semi-automatic, direct-impingement system and comes fitted with a Noveske SCI-6 closed-tine flash hider. Upper receiver features include a forward assist, shell deflector, and ejection-port cover.
The Noveske NSR-10.75 free-float M-LOK handguard (aluminum) provides a 10.75 inch rail section and M-LOK attachment interfaces. Rails are present, and scope-mount provision is included.
Controls are familiar and purposeful: a standard magazine release and a manual safety selector. The AR-15 platform, full-size layout, and 30+1 capacity are complemented by a textured polymer pistol grip bearing the Irregular Defense diamond logo. Manufactured in the USA under mfg part number 02001235, this is a recent-release collaboration that officially ended in December 2024, supported here by the included COA and factory packaging.