CW Gunwerks x JMac Customs IMR Signature Series 7.62x39 Semi-Auto Rifle, 14.5 in CHF Barrel Pinned and Welded to 16 in, Limited Run of 20
This CW Gunwerks JMac Customs IMR Signature Series rifle is a limited, individually numbered collaboration announced in January 2024. Built around JMac’s Infinity Modular Receiver, it features a 14.5 in cold hammer forged steel barrel pinned and welded to an overall legal length of 16 in, an ALG trigger, Picatinny rail sections on the handguard and railed top cover (separated by the rear sight assembly), and a left-side folding skeleton stock on an AK-pattern side-folding hinge/trunnion. Chambered in 7.62x39, it blends premium components with a scarce production run of only 20 rifles.
Condition
Overall Condition: Excellent condition, showing only faint signs of any prior use or handling.
Bore Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
Specific Condition Notes: There are a few minor surface scratches and small finish blemishes visible under close inspection.
What’s Included
- 3x 30-round polymer AK-pattern magazines (one with CW Gunwerks branding)
- JMac Customs extended M-LOK handguard with full-length top rail (installed)
- JMac Customs hinged railed dust cover/top cover (installed)
- JMac Customs folding skeleton stock (AK-pattern side-folding hinge/trunnion) with cheek piece (installed)
- Skeletonized metal pistol grip (installed)
- ALG trigger (installed)
- Multi-chamber muzzle brake, pinned and welded (installed)
- Pair of JMac Customs M-LOK hand stops (installed)
This limited IMR Signature Series rifle is a CW Gunwerks x JMac Customs collaboration with only 20 produced, each individually numbered. The build centers on JMac’s Infinity Modular Receiver, delivering a cohesive, premium configuration that is both scarce and collectible.
The top end combines a hinged railed dust cover with an extended M-LOK handguard to provide separate Picatinny rail sections on the handguard and the top cover; these are interrupted by the standard AK rear sight block and tangent rear leaf.
The 14.5 in cold hammer forged steel barrel uses a permanently attached multi-chamber muzzle brake to reach a 16 in overall barrel length. It runs a semi-automatic, long-stroke gas piston system in 7.62x39, pairing proven operation with a carefully executed muzzle treatment.
Ergonomics and control are enhanced by a left-side folding, skeletonized aluminum stock on an AK-pattern side-folding hinge/trunnion, with a raised cheek element and a textured buttpad; length of pull is 11.5 in. The skeletonized metal pistol grip and included pair of M-LOK hand stops support a confident, repeatable hold, while the ALG trigger provides a refined fire control feel. Capacity is 30+1, and three magazines are included.
As noted, the barrel is 14.5 in and is pinned and welded to an overall legal length of 16 in.

