SIG Cross Sawtooth 6.5 Creedmoor: Lightweight Folder Meets Sub-MOA Proof Barrel

September 19, 2026
11:12 am

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https://youtu.be/8_HfLGFvPLM The SIG Cross Sawtooth in 6.5 Creedmoor is a folding, one-piece chassis rifle that pairs a carbon-fiber Proof Research barrel with a proprietary bolt-action that borrows AR-style controls. The 18-inch Proof-barreled sample reviewed here is described as “wicked light,” coming in around 6.5 pounds before optic and suppressor, with a 1:8 twist, 20 MOA rail, AICS magazines, ambidextrous mag release, adjustable two-stage trigger (down to 2.5 pounds), M-Lok, QD sling points, and an integrated Arca section near the magwell. Standard-steel-barrel versions are also offered and still carry a sub-MOA guarantee at a price the host compared to a BCM 14.5 WKY, while Proof-barreled guns span 6.5 Creedmoor, 6.5 PRC, .308, 7 PRC, .300 Win Mag, .300 PRC, and other chamberings in 18- or 24-inch lengths. Accuracy and field notes Five-round groups at 100 yards with no cooldown, shot in Arizona summer heat, showed mixed first-day results (Sellier & Bellot 140 FMJ 1.21 in., Norma 130 .991, Barnes 140 1.6, Hornady ELD-M .866) under washed-out sunrise glass. Day two with a sunshade produced sub-MOA clusters: S&B .934, Barnes 1.2, Sierra MatchKing 140 .848, Nosler 140 .852. The host said the rifle “is meeting that sub MOA guarantee” and remained consistent through heat cycles out to 800 yards from a tripod, with no feeding or lockup issues. Recoil on the light folder was called “extremely solid” compared with typical folding chassis guns. Pros, cons, and specs Pros: Very light and well balanced even with scope and can; smooth, tight bolt; easy folding stock and LOP/comb adjustments; AR-style grip and safety; AICS mags; built-in Arca; solid lockup; sub-MOA with several loads; hunting-and-PRS dual use. Cons: Proprietary action and barrel (not AR, Savage, or 700 prefits—only the grip is AR-compatible); Barnes 140 underperformed here; Arca does not run the full forend (host wanted continuous Arca with M-Lok remaining); first-day groups suffered from sun in the glass. Specs (this sample): 18-in Proof CF 6.5 CM, 1:8, ~6.5 lb bare, monolithic receiver, folding stock, two-stage trigger, 20 MOA rail, AICS, M-Lok, QD, partial Arca. Street: roughly $1,599–$1,699 for base guns; Proof/big magnums up to about $2,799. “When I picked this thing up, I was like, ‘Wow, it’s a little bit lighter than I expected it to feel,’” the host said, adding that for a complete folding chassis with a Proof barrel, “I think that is an extremely solid price point.” He would still prefer Arca the full length of the forend. After about 80 rounds he expected groups in the .75–.85 range with more load work, and concluded the rifle “just absolutely performed.”

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The SIG Cross Sawtooth in 6.5 Creedmoor is a folding, one-piece chassis rifle that pairs a carbon-fiber Proof Research barrel with a proprietary bolt-action that borrows AR-style controls. The 18-inch Proof-barreled sample reviewed here is described as “wicked light,” coming in around 6.5 pounds before optic and suppressor, with a 1:8 twist, 20 MOA rail, AICS magazines, ambidextrous mag release, adjustable two-stage trigger (down to 2.5 pounds), M-Lok, QD sling points, and an integrated Arca section near the magwell. Standard-steel-barrel versions are also offered and still carry a sub-MOA guarantee at a price the host compared to a BCM 14.5 WKY, while Proof-barreled guns span 6.5 Creedmoor, 6.5 PRC, .308, 7 PRC, .300 Win Mag, .300 PRC, and other chamberings in 18- or 24-inch lengths.

Accuracy and field notes

Five-round groups at 100 yards with no cooldown, shot in Arizona summer heat, showed mixed first-day results (Sellier & Bellot 140 FMJ 1.21 in., Norma 130 .991, Barnes 140 1.6, Hornady ELD-M .866) under washed-out sunrise glass. Day two with a sunshade produced sub-MOA clusters: S&B .934, Barnes 1.2, Sierra MatchKing 140 .848, Nosler 140 .852. The host said the rifle “is meeting that sub MOA guarantee” and remained consistent through heat cycles out to 800 yards from a tripod, with no feeding or lockup issues. Recoil on the light folder was called “extremely solid” compared with typical folding chassis guns.

Pros, cons, and specs

Pros: Very light and well balanced even with scope and can; smooth, tight bolt; easy folding stock and LOP/comb adjustments; AR-style grip and safety; AICS mags; built-in Arca; solid lockup; sub-MOA with several loads; hunting-and-PRS dual use.
Cons: Proprietary action and barrel (not AR, Savage, or 700 prefits—only the grip is AR-compatible); Barnes 140 underperformed here; Arca does not run the full forend (host wanted continuous Arca with M-Lok remaining); first-day groups suffered from sun in the glass.
Specs (this sample): 18-in Proof CF 6.5 CM, 1:8, ~6.5 lb bare, monolithic receiver, folding stock, two-stage trigger, 20 MOA rail, AICS, M-Lok, QD, partial Arca. Street: roughly $1,599–$1,699 for base guns; Proof/big magnums up to about $2,799.

“When I picked this thing up, I was like, ‘Wow, it’s a little bit lighter than I expected it to feel,’” the host said, adding that for a complete folding chassis with a Proof barrel, “I think that is an extremely solid price point.” He would still prefer Arca the full length of the forend. After about 80 rounds he expected groups in the .75–.85 range with more load work, and concluded the rifle “just absolutely performed.”

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