The Trinity Force carbine buffer tube kit supplies the receiver-extension hardware needed to mount a collapsible stock on a mil-spec AR-15 lower.

Features:

• Mil-spec aircraft-aluminum buffer tube, hard-coat anodized with rolled threads
• Carbine buffer (approximately 3 oz)
• Action spring
• Steel castle nut
• Steel end plate

Fits mil-spec AR-15 lowers, not commercial-spec. Stock is not included.