Turkish SPAS-12 Clone vs. the Original (Mars Arms review of the Sulun SPASS-12)
The video reviews the new Turkish-made Sulun SPASS-12 shotgun and compares it side-by-side with an original Franchi SPAS-12. The reviewer put roughly 120–150 rounds through the clone.

Short summary of performance
•It prefers heavier loads.
•For best reliability, keep the magazine capped at 5 rounds.
•Avoid one-handed shooting using the hook.

Reliability notes

Two recurring issues appeared:

1. Occasional failure of rounds to feed properly from the magazine tube (suspected follower hang-up at the extension transition + relatively weak magazine spring). A stronger spring fixed it. Limiting capacity to 5 rounds avoids the problem.

2. When shooting one-handed, the forend could drift out of the semi-auto position, causing failures to fire. This does not occur when shooting normally from the shoulder with the support hand on the forend. Lighter loads (e.g., Suprema 1 oz buckshot at ~1,300–1,350 fps) mostly ran when shoulder-fired but produced occasional stovepipes. Winchester buckshot and Remington slugs ran cleanly. The original Franchi handled the same light loads more reliably, including one-handed.

Key comparisons:

The clone is a close visual and functional copy but differs in many details:
•Muzzle/barrel: Slightly different thread protector and no step on the barrel; proprietary threads (common on Turkish guns) limit accessory options.
•Sights: Older-style front sight on the clone; rear sight is a plain circle (original has a bottom notch for slugs).
•Magazine tube: Extension is similar but aluminum (vs. steel) and thicker; wider sling swivel.
•Handguard/forend: Very close overall; slightly different screw/line placement and a weaker spring on the mode-selector button (easier to switch modes, but likely contributes to the one-handed reliability issue).
•Receiver/controls: Carrier latch on the right (no left-side controls). No magazine cutoff. Easier to load (relieved bottom). Comes with a Picatinny rail on top (reviewer removed it as ugly and it interfered with folding the stock).
•Trigger group: Standard (non-enlarged) trigger guard. Simple cross-bolt safety behind the trigger (convenient but mediocre feel). In pump mode the action can open without pulling the trigger (unlike the original’s more complex lever that acts as both action release and secondary safety).
•Grip/stock: Similar overall but many detail differences. One-piece grip with a large bottom hole (original is solid two-piece). Longer length of pull (~14.5” vs. ~13”). Different stock geometry, pivot location, and angle (partly to clear the rear sight when folded). Weaker hook spring and less effective buffer (potential for long-term wear). Hook shape is simpler/less curved. Folding mechanism works but is stiffer or less refined in places; missing bumper piece on the clone.

Overall takeaway:

The Sulun is a recognizable, functional clone of the iconic SPAS-12 with some convenience improvements (easier loading, simpler safety, mode switch) and some compromises (reliability quirks with light loads or one-handed use, weaker springs, proprietary parts, less refined stock geometry and buffers). It works best with heavier ammo and a 5-round magazine limit when shooting conventionally from the shoulder. The original remains smoother and more reliable in the reviewer’s limited testing.