(S)keletonized(T)ube(6)inches long and 6 positions with SM-5.5 (not assembled)

This M4 tube adapter replaces the standard buffer tube to ensure the stock folds as flat as possible!

Fits most M4 style stocks/braces 

Lightweight and Rigid

• Integrated QD Sling Sockers
• 6” Length
• 6 positions 
• 7075 T6 Aluminum
• Type III Hardcoat Green Anodized (color may vary)

SM adapters utilize the factory rear trunnions and eliminate the need for additional adapters or folding mechs. 

This version of the SM stock/brace adapter is specifically made for the Russian 5.5mm pin folding stocks. 5.5mm trunnions can be found in the SGL (Saiga) rifles and on the new KUSA vityaz clone, not to mention, the trunnion itself is more readily available than the 4.5mm version.

This stock adapter, like the rest of the SM line, will allow you to install all of our Arm Bar and Stocks as well as SIG style stocks. Cheek wield is adjustable by moving the stock/brace up or down on the adapter.

• 2 height positions
• 7075 aluminum
• Black hardcoat anodize finish
• Includes mounting bolt for lower hole
• Does *not* lock when folded.

ANODIZE VARIATIONS & DIFFERENT LIGHT SOURCES: Observe the mesmerizing spectrum of hues in our anodized components! Their captivating variations in color and unique reactions to different light sources make each piece one-of-a-kind. 

Attaching a stock to a pistol makes it an SBR and requires NFA approval. You are responsible for knowing and following your local/state/federal laws!

JMac Customs LLC is not responsible for the end users misuse  of our products.