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Proof Research
Overview
The PROOF RESEARCH 243 Caliber 28" Stainless Steel Competition Barrel features a 1:7 twist rate, which is ideal for stabilizing heavier projectiles, ensuring better accuracy and performance at extended ranges. With its 28-inch length, this barrel provides improved velocity and a flatter trajectory, making it well-suited for precision shooting and competition events. This barrel commonly appears in long-range builds where accuracy and performance are paramount.
243 Caliber 1-7 Twist 28" Stainless Steel Competition BBL
Prices checked
Availability is good for the Proof Research 243 Caliber 1-7 Twist 28" Stainless Steel Competition BBL: it was in stock at one retailer or another nearly every day in September 2026, and today all 5 retailers we track have it in stock. Prices barely moved in September 2026, holding around $368.99, so there haven't been real sales lately. Buying today, the lowest price is $368.99 at Ammunition Depot, which matches the best price we saw in September.
Prices checked · refreshed daily across 37 retailers
We ranked every barrel by how often it shows up in real builds on GunPartPicker.
Read the guide: AR-15 Barrel Length & Brand Report →Check it against the live catalog:
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