This is the BLOWBACK VERSION – THIS IS NOT THE NEWEST ROLLER DELAYED VERSION!!!!

DESCRIPTION

This upper receiver is buffer-less, side charging, non reciprocating and features Matador Arms® patent-pending EZTS™ “Easy Take-down System” with no tools required to break down the upper for maintenance and cleaning. The 9mm upper is machined for maximum weight reduction, slim profile, and compatibility with bolt catches and lower receivers. The upper is also built with a tapered multi-material 4-piece trunnion system to maintain mechanical accuracy and durability.

The MAT-9K™ 9mm AR upper is compatible with AR-9 Lower receivers in any double-stack magazine configuration:

• Glock ®
• Sig Sauer ®
• Colt® Stick Magazines
• HK® MP5™
• CZ ® Evo Scorpion™

With an AR-15 Lower Receiver it requires our Mag-X™ magazine conversion kit or equivalent type product such as Endomags.

FEATURES

1. Non-reciprocating steel charging handle (ambidexterous)

2. 4140 Nitrided steel bolt and action parts

3. 6061-T6 anodized upper receiver

4. 4150 Lightweight Nitrided Barrel, 5” long, 1:10 twist, 1/2×28 threads

5. NATO 1913 Spec top rail

6. 1 MLOK slot (both sides, bottom)

7. Compatible with LRBHO (Last Round Bolt Hold Open) lower receiver

8. Ready to run with a Suppressor right out of the box!