PCC Faceoff | Direct Blowback vs Roller-Delayed | Stribog SP9A1 vs SP9A3

Direct Blowback vs Roller-Delayed Overview

The video examines pistol caliber carbines using two operating systems on the same basic platform. The host uses the Grand Power Stribog SP9A1 as the direct blowback example and the Stribog SP9A3 as the roller-delayed example. Both are configured with an SB Tactical brace and a Holosun optic. Direct blowback is described as a simple system where the cartridge fires, the casing drives the carrier straight back, and the shooter feels that impulse directly in the shoulder. The roller-delayed system locks and then unlocks under gas pressure, introducing a brief delay that softens the recoil impulse. The goal is to see how these differences translate into felt recoil, muzzle movement, and practical performance on target rather than declaring a universal winner.

Pricing and Test Setup

Before shooting, the host outlines pricing differences between the two Stribog variants. The SP9A1, in a configuration similar to the one shown but without optic, runs around $1,050, with bare models without a brace closer to the $800 range. The roller-delayed SP9A3 is slightly more expensive, about $1,150 as configured without optic and roughly $1,000 without a brace. To compare performance fairly, both guns are run in an “apples to apples” test using the same drill. The plan is to fire 10 hits on target from about 20 yards as quickly as possible, record times, and observe muzzle rise and recoil impulse. The test will be conducted both unsuppressed and suppressed to see how each operating system behaves with a suppressor attached.

SP9A1 Direct Blowback Drill Results

The first timed drill uses the Stribog SP9A1 in its direct blowback configuration at roughly 20 yards. The shooter runs 10 hits on target as quickly as possible, with one string requiring an extra makeup shot, resulting in 11 rounds fired in 4.31 seconds. A second string is then fired to establish another baseline, producing a time of 3.89 seconds. During these runs, the host notes noticeable muzzle rise and a more pronounced recoil impulse typical of direct blowback, though the gun remains reliable and controllable. These unsuppressed results provide a reference point for later comparisons with the roller-delayed SP9A3 and for observing how a suppressor changes the feel and performance of the system.

SP9A3 Roller-Delayed Drill Results

Next, the Stribog SP9A3 roller-delayed variant is run through the same 10-shot drill at the same distance. On the first string, the shooter records 10 shots in 4.74 seconds and immediately notices a different recoil impulse. The gun feels softer, but the shooter initially overcompensates for the motion, causing some dip in the sight picture. A second string is then fired, yielding a faster 3.68-second time. The host comments that the SP9A3 feels smoother and softer, though this particular gun is essentially brand new. These unsuppressed runs suggest that roller delay can reduce felt recoil and change how the shooter manages the gun, even if raw times are similar to or slightly better than the direct blowback baseline.

Suppressor Testing with SP9A1

The test then moves to suppressed fire with the SP9A1. An AB Suppressor F4 titanium can is attached, chosen for its compact, lightweight design that should not significantly affect muzzle balance. Running the same 10-shot drill, the shooter immediately experiences substantial gas blowback to the face, a known downside of direct blowback systems when suppressed. One string does not register a time, so the drill is repeated with the shot timer held closer. A recorded run shows 10 hits in 3.58 seconds, indicating that performance can be quick but comes with discomfort from gas venting near the ejection port. The host emphasizes that this gas-to-face effect is characteristic of suppressed direct blowback designs, even when overall sound levels are impressively quiet.

Suppressor Testing with SP9A3

Suppressor testing continues with the roller-delayed Stribog SP9A3 using the same AB Suppressor F4 titanium can. On the first timed string, the shooter records a clean 3.00-second run for 10 hits, noticeably faster than previous times. A second string is fired, during which 12 impacts are recorded due to picking up extra shots, and the timer shows 3.49 seconds. The shooter notes that the SP9A3 feels very quick and that gas blowback to the face is minimal compared to the direct blowback SP9A1. Most of the visible gas appears to vent around the trigger guard rather than directly at the shooter. These results highlight how the roller-delayed system can offer a softer recoil impulse and more comfortable shooting experience when suppressed, while still maintaining rapid shot-to-shot performance.

Reliability, Complexity, and Future Comparisons

Back at the bench, the host summarizes the tradeoffs between direct blowback and roller-delayed systems. Direct blowback, as seen in the SP9A1, is mechanically simpler with fewer moving parts, which can translate into inherent reliability and ease of operation. The system relies on the fired casing driving the bolt straight back for extraction and cycling. Roller-delayed designs, like the SP9A3, introduce more complexity with rotating and locking components that delay movement under pressure, yielding a softer shooting experience but adding parts and mechanical steps. The choice between them is framed largely as a matter of budget and preference, with the SP9A1 generally cheaper and the SP9A3 offering refined recoil characteristics. The host also suggests future comparisons involving buffer-tube-dependent PCCs such as the Aero EP9 or Griffin Mark II against roller-delayed platforms, and notes that slow-motion footage at 50 percent speed can help viewers visually compare muzzle behavior and decide which system suits their needs.