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Swiss Schmidt-Rubin Straight-Pull Rifle Database

The Daniel Defense DD5 V3 is Daniel Defense's premium AR-10 platform: 16" barrel in 7.62 x 51 NATO (.308 Winchester), intermediate gas system with user-adjustable gas block, proprietary 4-Bolt Connection System (barrel without nut), DD5 Rail 15.0 M-LOK free-float handguard, DLC-coated superfinished BCG, Superior Suppression Device muzzle device, fully ambidextrous ergonomics, and SR-25 magazine compatibility. A .308 semi-auto platform completely redesigned — not a scaled-up AR-15 — engineered for long-range precision, demanding sport shooting, and premium suppressor use.

Unlike traditional AR-10s that adapt an AR-15 architecture to .308 caliber (with inherent compromises), the DD5 is a platform completely redesigned by Daniel Defense around 7.62 NATO. Result: more reliable, more rigid, more precise, and lighter than classic AR-10s. Key innovation: 4-Bolt Connection System — the barrel is attached to the upper receiver by 4 dedicated bolts, without a barrel nut. Perfect alignment, extreme rigidity, maximum precision. Intermediate gas system specifically calculated for .308 on 16" barrel. User-adjustable gas block for optimal suppressed/unsuppressed configuration. DLC-coated superfinished BCG for drastically reduced friction, smoother cycling, minimal wear.

The 7.62 x 51 NATO (military) and .308 Winchester (civilian) are quasi-identical and totally interchangeable in the DD5 V3. It is THE reference .30 cal caliber for long-range precision shooting (effective 100-1000 m), big game hunting (wild boar, deer, roe deer per cantonal regulations), military and sniper use (historic NATO caliber), DMR (Designated Marksman Rifle) role, and suppressed subsonic shooting.

16" barrel using Daniel Defense's proprietary S2W (Strength-to-Weight) heavy profile, DD proprietary steel, Cold Hammer Forged, chrome-lined. Heavy phosphate mil-spec exterior treatment. 1:10" twist optimized for modern .308 loads. 16" is the versatile sweet spot of .308 semi-auto: short enough for handling, long enough to extract full ballistics.

The user-adjustable gas block is a premium feature unique in the Daniel Defense range. Allows the user to reduce gas pressure for suppressed shooting (avoiding over-gassing), return to standard operation for unsuppressed use, fine-tune per ammunition used, and extend component lifespan. This component alone justifies premium aftermarket investment — here it's factory-included.

The Daniel Defense Superior Suppression Device is a proprietary DD muzzle device, 17-4 PH stainless steel, salt bath nitride. Functions: significant muzzle flash signature reduction, reduced muzzle rise for faster target reacquisition. 5/8 x 24 TPI thread (standard .30 cal suppressor thread) — removable for suppressor installation.

15.0" length covering the barrel almost entirely to the gas block. M-LOK on 3 sides, continuous 1913 Picatinny rail on top, free-float design, proprietary Daniel Defense 4- or 6-bolt attachment, CNC 6061-T6 aluminum, Type III anodized. Large accessory platform: bipod, LPVO or precision scope, laser range finder, sling, light, various QD points.

The DD5 V3 offers the most complete ambidextrous ergonomics in the Daniel Defense range — unique in the DD catalog: ambi safety selector, ambi bolt catch, ambi magazine release, GRIP-N-RIP ambi charging handle with anti-gas features (critical for suppressed use), integrated rear QD point on lower, integrated QD point on stock. Fully ambi ergonomics place the DD5 V3 at the level of the best modern tactical platforms — usable indifferently right or left-handed, in all conditions.

The Bolt Carrier Group is Daniel Defense optimized: DLC (Diamond-Like Carbon) superfinished finish for extremely reduced friction, maximum hardness and longevity, improved extractor, dual ejector for maximum reliability, integrated buffer optimizing cycling and reducing recoil impulse. Easy maintenance — DLC minimizes residue adhesion.

• Caliber: 7.62 x 51 NATO / .308 Winchester (interchangeable)
• Type: semi-automatic AR-10 carbine — DD5 platform
• Barrel length: 16" (406 mm)
• Barrel profile: S2W proprietary Daniel Defense heavy
• Barrel material: Daniel Defense proprietary steel, Cold Hammer Forged, chrome-lined
• Barrel treatment: heavy phosphate mil-spec
• Twist rate: 1:10"
• Muzzle thread: 5/8 x 24 TPI (standard .30 cal suppressor thread)
• Muzzle device: Daniel Defense Superior Suppression Device (17-4 PH stainless, salt bath nitride)
• Gas system: intermediate, direct impingement
• Gas block: user-adjustable, CNC 4140, heavy phosphate
• Barrel/upper connection: Daniel Defense 4-Bolt Connection System (no barrel nut)
• Upper receiver: Mil-Spec, CNC 7075-T6, Type III hard-coat anodized
• Lower receiver: Mil-Spec, CNC 7075-T6, Type III hard-coat anodized
• Safety: ambidextrous
• Bolt catch: ambidextrous
• Magazine release: ambidextrous
• Charging handle: Daniel Defense GRIP-N-RIP ambidextrous with anti-gas features
• Trigger: Daniel Defense Mil-Spec
• Handguard: Daniel Defense DD5 Rail 15.0 M-LOK, free-float, CNC 6061-T6
• BCG: DLC-coated superfinished, enhanced extractor, dual ejector, integrated buffer
• Stock tube: Mil-Spec 7-position, 7075-T6 aluminum
• Stock: Daniel Defense Buttstock with non-slip cheek weld, interchangeable butt pads, integral QD
• Pistol grip: Daniel Defense Pistol Grip, glass-filled polymer, soft-touch overmolding
• Sights: not included
• Overall length: 848 – 940 mm (33 3/8" – 37") with muzzle device
• Weight: 3.77 kg (8.3 lb) without magazine
• Magazine: Magpul PMAG 20 — SR-25 pattern compatible
• Finish: Black (Type III hard-coat anodizing)
• Made in: USA, Black Creek (Georgia)

• Completely redesigned AR-10 platform — not a scaled-up AR-15.
• 4-Bolt Connection System innovation.
• User-adjustable gas block.
• DLC-coated superfinished BCG.
• COMPLETE AMBI ergonomics (safety + bolt catch + mag release + charging handle) — unique in the DD range.
• Superior Suppression Device.
• MFR 15.0 M-LOK handguard — large accessory platform.
• SR-25 magazine compatibility.
• 5/8 x 24 standard .30 cal suppressor thread.

• Long-range precision shooting — 100 to 1000 m. DMR role.
• Big game hunting — wild boar, deer, roe deer per cantonal regulations (.308 authorized for big game hunting throughout Switzerland).
• .308 precision sport shooting — PRS competitions, semi-auto matches, long-distance field shooting.
• Premium .30 cal suppressor platform — adjustable gas block + anti-gas charging handle = optimal suppressed configuration.
• Tactical .308 shooting — .30 cal patrol rifle, operational DMR role.
• Premium tactical collection — catalog reference Daniel Defense AR-10.

It is important to understand that the DD5 (AR-10 .308) and the DDM4 (AR-15 5.56 / 300 BLK) are two completely different platforms, not variants of the same rifle. Different caliber (7.62 vs 5.56/300 BLK), different platform (AR-10 vs AR-15), different magazines (SR-25 vs STANAG), different weight (3.77 vs 2.6-3.2 kg), different parts (no interchangeability), different innovations (DD5 = 4-Bolt Connection + adjustable gas block + complete ambi — specific innovations absent from DDM4), different vocation (DD5 = long-range precision + big game hunting + DMR / DDM4 = tactical 5.56 versatility or 300 BLK specialist).

• 1 x Daniel Defense DD5 V3 16" 7.62 NATO rifle
• 1 x Magpul PMAG 20 (SR-25 pattern) magazine (20 rds)
• 1 x Superior Suppression Device (factory-installed)
• 1 x Full-Latch Impact hard case
• 1 x case lock
• 1 x chamber flag
• DD5 user manual
• Gas block adjustment guide
• Test certificate